Домішкові та радіаційні парамагнітні центри в монокристалах зі структурою тригонального Ca-галогерманату: Автореф. дис… канд. фіз.-мат. наук / А.А.

18

EUeA?ANUeEEE AeA?AEAAIEE OI?AA?NEOAO

?IAI? ?AAIA O?AIEA

NAEUeNUeEEE

Aiae??e Aiaoie?eiae/

OAeE 538.113+535.34+535.37

AeII?OEIA? OA ?AAe?AOe?EI? IA?AIAAI?OI? OeAIO?E A IIIIE?ENOAEAO C?
NO?OEOO?ITH O?EAIIAEUeIIAI

Na-AAEIAA?IAIAOO

01.04.10. – O?ceea iai?ai?ia?aeiee?a ? ae?aeaeo?ee?a

A a o i ? a o a ? a o

aeena?oaoe?? ia caeiaoooy iaoeiaiai nooiaiy

eaiaeeaeaoa o?ceei-iaoaiaoe/ieo iaoe

EUeA?A – 1999

Aeena?oaoe??th ? ?oeiien.

?iaioa aeeiiaia o Euea?anueeiio aea?aeaaiiio oi?aa?neoao? ?iai? ?aaia
O?aiea,

I?i?noa?noai ina?oe Oe?a?ie

Iaoeiaee ea??aiee: aeieoi? o?ceei – iaoaiaoe/ieo iaoe,

i?ioani? Iinaiei Aiaoie?e
??io?eiae/,

Euea?anueeee aea?aeaaiee
oi?aa?neoao

?iai? ?aaia O?aiea.

Io?oe?ei? iiiiaioe: aeieoi? o?ceei – iaoaiaoe/ieo iaoe,

i?ioani? Aaena Aeieo?i Oaaei?iae/,

?inoeooo o?ceee IAI Oe?a?ie,

caa?aeoaa/ a?aeae?eo ?aciiainieo
yaeu;

aeieoi? o?ceei – iaoaiaoe/ieo iaoe,

i?ioani? Iaoeianueeee Aiae??e
I?anoiae/,

Aea?aeaaiee oi?aa?neoao “Euea?anueea
iie?oaoi?ea”,

caa?aeoaa/ eaoaae?e
iai?ai?ia?aeieeiai? aeaeo?ii?ee.

I?ia?aeia onoaiiaa: Ee?anueeee oi?aa?neoao ?iai? Oa?ana Oaa/aiea,

eaoaae?a aenia?eiaioaeueii? o?ceee,

I?i?noa?noai ina?oe Oe?a?ie.

Caoeno a?aeaoaeaoueny 14 ea?oiy 1999 ?ieo i 15 aiae. 30 oa. ia
can?aeaii? niaoe?ae?ciaaii? a/aii? ?aaee Ae 35.051.09 i?e Euea?anueeiio
aea?aeaaiiio oi?aa?neoao? ?iai? ?aaia O?aiea (290005, i.Euea?a, aoe.
Ae?aaiiaiiaa, 50)

C aeena?oaoe??th iiaeia iciaeiieoeny a iaoeia?e a?ae?ioaoe?
Euea?anueeiai aea?aeaaiiai oi?aa?neoaoo ?iai? ?aaia O?aiea (290005,
i.Euea?a, aoe. Ae?aaiiaiiaa, 5).

Aaoi?aoa?ao ?ic?neaii 13 aa?aciy 1999 ?ieo.

A/aiee nae?aoa? niaoe?ae?ciaaii? a/aii? ?aaee,

aeieoi? o?ceei-iaoaiaoe/ieo iaoe, i?ioani?
Aeaaee?anueeee E.O.

CAAAEUeIA OA?AEOA?ENOEEA ?IAIOE

Ia nueiaiaei? a oaa?aeio?euei?e eaaioia?e aeaeo?ii?oe? aeei?enoiao?oueny
aaeeea e?euee?noue ??cieo ca no?oeoo?ith ? o?i?/iei neeaaeii iaoa??ae?a.
A oie aea /an aaaeaoueny iiooe iiaeo iaoa??ae?a, a oaeiae iiaeeeainoae
iie?auaiiy oa?aeoa?enoee ?nioth/eo. Ia ii/aoeo 80-o ?ie?a aoa a?aee?eoee
iiaee eean iaoa??ae?a — ?icoii?yaeeiaai? aoeaio?e/i? niieoee A3AxN6-xI14
c? no?oeoo?ith o?eaiiaeueiiai Na-aaeiaa?iaiaoo. Caaaeyee nai?i
oi?eaeueiei aeanoeainoyi (iioe/iei, aeonoe/iei, i’?ciaeaeo?e/iei ? o.
ae.), iiaeeea?noth io?eioaaoe iiiie?enoaee aeniei? iioe/ii? yeino?
aeinoaoiuei aaeeeeo ?ici???a oe? iaoa??aee inoaii?i /anii ana a?eueoa
i?eaa?oathoue oaaao aeine?aeiee?a. No?oeoo?a o?eaiiaeueiiai Na-
aaeiaa?iaiaoo ia? /ioe?e no?oeoo?ii iaaea?aaeaioi? eao?iii? iiceoe?? ?
aeicaiey? aaiaeeoe a e?enoae?/io a?aoeo a?eueo?noue ?ii?a aeaiaio?a
ia?ao?aeieo a?oi a ??cieo aaeaioieo noaiao. Iiaeeea?noue iaeii/aniiai
aoiaeaeaiiy ?ii?a aeaiaio?a a?oie cae?ca ? ??aee?niicaiaeueieo aeaiaio?a
aea? ciiao cae?eniaiiy aoaeoeaii? nainea?e?ciaaii? ethi?ianoeaioe??.
Iniaeeaee ?ioa?an aeine?aeiee?a aeeeeea? iayai?noue eiiiiceoe?eiiai
?icoii?yaeeoaaiiy eao?iiii? i?aea?aoee iiiie?enoae?a aeaiiai
no?oeoo?iiai oeio ? iia’ycaieo c oeei iniaeeainoae ?o o?ce/ieo
aeanoeainoae. Ine?eueee, aeai? iaoa??aee ? ia?ao?aeiith eaieith i?ae
iiai?noth aii?yaeeiaaieie nenoaiaie (?aeaaeuei? iiiie?enoaee) ?
iiai?noth ?icoii?yaeeiaaieie (neei), aiie ? oe?eaaei ia’?eoii aeey
ooiaeaiaioaeueieo aeine?aeaeaiue a aaeoc? o?ceee oaa?aeiai o?ea.

sse a?aeiii, aeanoeaino? e?enoae?a a cia/i?e i??? aecia/athoueny ?o
oi/eiaeie aeaoaeoaie (aeii?oeiaeie, iaaaaeaieie ?aae?aoe??th ? o.ae.).
Iiiie?enoaee c? no?oeoo?ith o?eaiiaeueiiai Na- aaeiaa?iaiaoo, aeoeaiaai?
?iiaie o?iio ? iaiaeeio, ? ia?niaeoeaieie eaca?ieie iaoa??aeaie. A ?yae?
o?eaiiaeueieo e?enoae?a A3AxN6-xI14 ia aeaeo?iiii-eieeaiiio ia?aoiae?
4O2 _ 4A2 aeoeaaoi?ieo ?ii?a Cr3+ io?eiaii noeioeueiaaia aei?ii?ithaaiiy
a ?aei?aeii oe?ie?e iaeano? (?e=0.77-1.25 iei), a oiio /ene? ? c
naiiiiiiiaeaiiyi /anoioe aaia?aoe??. Na?aae a?aeiieo eaca?ieo iao?eoeue,
aeoeaiaaieo ?iiaie Nd3+, aiie iathoue iaeieae/ee ii??a caoaeaeaiiy
aaia?aoe??. Aea?? iioeiaeueieo oaoiieia?/ieo oiia io?eiaiiy
aenieiye?nieo ?aae?aoe?eii no?eeeo eaca?ieo aeaiaio?a iaiiaeeeaee aac
ciaiiy i?e?iaee ? iaoai?ci?a ooai?aiiy aeaoaeo?a, ui aeieeathoue a ieo
i?ae ae??th ?ii?coth/iai aei?ii?ithaaiiy. A e?enoaeao no?oeoo?iiai oeio
o?eaiiaeueiiai Na- aaeiaa?iaiaoo oi/eiaee aeaoaeo, caeiath/e no?oeoo?ii
aea?aaeaioi? iiceoe??, ciaoiaeeoueny a ??cieo ii nee? ? neiao???
e?enoae?/ieo iieyo, ui nooo?ai oneeaaeith? aeine?aeaeaiiy eiai
aia?aaoe/iiai niaeo?o. Iaeiei c iae?ioi?iaoeai?oeo iaoiae?a
aeine?aeaeaiiy aeaeo?iiii? aoaeiae oi/eiaiai aeaoaeoa, eiai
i?e?iaee, eieaeueii? neiao??? oa aca?iiae?? c iaeaeeae/ei ioi/aiiyi ?
iaoiae aeaeo?iiiiai ia?aiaai?oiiai ?aciiaino (AI?). A eiiieaen? c
iaoiaeii iioe/ii? niaeo?ineii?? a?i aea? ciiao io?eiaoe iaea?eueo iiaio
?ioi?iaoe?th i?i i?e?ino?oeoo?o aeaoaeoa oa iniaeeaino? e?enoae?/iiai
iiey a iiceoe?yo eiai eieae?caoe??. Ne?ae a?aei?oeoe, ui ii?yae ?c
aaeeeith e?euee?noth i?aoeue, i?enay/aieo aeine?aeaeaiith iioe/ieo
niaeo??a aeaieo e?enoae?a, i?aeoe/ii a?aenooi? e?oa?aoo?i? aeai? ii
aeine?aeaeaiith ?o niaeo??a AI?. I/aaeaeii, oea iia’ycaii ?c
neeaaei?noth iieno ? ?ioa?i?aoaoe?? niaeo??a AI? /anoeiai
?icoii?yaeeiaaieo nenoai.

Oaeei /eiii, aeine?aeaeaiiy i?e?iaee ? aeaeo?iiii? aoaeiae aeii?oeiaeo
oa ?aae?aoe?eieo ia?aiaai?oieo oeaio??a a e?enoaeao c? no?oeoo?ith
o?eaiiaeueiiai Na- aaeiaa?iaiaoo, aieeao ??ciiai ?iaeo ia?iaie ia ?o
ca?yaeiaee noai, a oaeiae no?oeoo?e e?enoae?/iiai iiey a iiceoe?yo ?o
eieae?caoe?? ? aeooaeueiith caaea/ath o?ceee oaa?aeiai o?ea.
Aeine?aeaeoaai? e?enoaee iaeaaeaoue aei iiaiai eeano iaoa??ae?a,
iinoaaeai? i?iaeaie ua ia aoee ?icaeyioo? a e?oa?aoo?? aeey e?enoae?a
aeaiiai no?oeoo?iiai oeio, ui ? aecia/eei iinoaiiaeo caaaeaiiy
aeena?oaoe?eii? ?iaioe.

Ca’ycie c iaoeiaeie i?ia?aiaie, ieaiaie, oaiaie.

Iiaeaia ?iaioa aeeiiaia a eaai?aoi??? ieenieo e?enoae?a eaoaae?e o?ceee
iai?ai?ia?aeiee?a Euea?anueeiai aea?aeaaiiai oi?aa?neoaoo ?iai? ?aaia
O?aiea o a?aeiia?aeiino? c aea?aeathaeaeaoiith oaiith I?i?noa?noaa
ina?oe Oe?a?ie Oe-281a “Anoaiiaeaiiy caeiiii??iinoae aieeao oi/eiaeo
aeaoaeo?a e?enoae?a neeaaeieo ieneae?a ia ?o o?ce/i? aeanoeaino?” a
?aieao iaoeiai-aeine?aeii? i?ia?aie I?i?noa?noaa ina?oe Oe?a?ie “Aieea
ciai?oi?o oaeoi??a ia aeaeo?iii?, ?iii?, oa iieaeoey?i? yaeua oa
i?ioeane a ia’?i?, ia iiaa?oi? oa a?aieoeyo ?icae?eo iai?ai?ia?aeiee?a ?
ae?aeaeo?ee?a” (?a?no?.? i?ia?aie “10.04 — MB/**-97”).

Iaoa ?iaioe:

Aecia/aiiy niaeo?ineii?/ieo oa?aeoa?enoee ia?aiaai?oieo (aeii?oeiaeo 3dn
– ?ii?a ? iaaaaeaieo OO- oa ?aioaai?anueeei aei?ii?ithaaiiyi) oeaio??a a
iiiie?enoaeao c ?icoii?yaeeiaaiith e?enoae?/iith no?oeoo?ith
Ca(Sr)3Ga2Ge4O14, La3Ga5Ge(Si)O14, CaxSr3-xGa2Ge4O14 (x=1, 1.5, 2),
anoaiiaeaiiy oa?aeoa?ieo iniaeeainoae aioo??oiueie?enoae?/iiai iiey a
iiceoe?yo eieae?caoe?? aeoeaaoi?ieo ?ii?a, anoaiiaeaiiy i?e?iaee
iaaaaeaieo ?ii?coth/ei aei?ii?ithaaiiyi oeaio??a. Aeey ae??oaiiy
iinoaaeaieo i?iaeai aoee noi?ioeueiaai? ianooii? caaaeaiiy:

-neioacoaaoe iiiie?enoaee Ca(Sr)3Ga2Ge4O14, La3Ga5Ge(Si)O14,
Ca(Sr)3Ga2Ge4O14:Cr, La3Ga5Ge(Si)O14:Cr, CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5,
2), Sr(Ca)3Ga2Ge4O14:Mn aeniei? iioe/ii? yeino? ? o?i?/ii? /enoioe;

-aeine?aeeoe niaeo?e AI? iiiie?enoae?a Ca(Sr)3Ga2Ge4O14:Cr,
La3Ga5Ge(Si)O14:Cr, oa iiiie?enoae?a oaa?aeeo ?ic/ei?a
CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5, 2), iioe/i? oa AI? niaeo?e iiiie?enoae?a
Na- oa Sr- aaeiaa?iaiao?a, aeoeaiaaieo ?iiaie ia?aaioeth a
oaiia?aoo?iiio ?ioa?aae? 77 – 300 E;

-anoaiiaeoe eieaeueio neiao??th, aaeaioiee noai aeoeaaoi?ieo ?ii?a,
cai?iiiioaaoe noaie ca?yaeiai? eiiiainaoe??, iienaoe niinoa?aaeoaai?
niaeo?e AI? a ?aieao oi?iae?cio ni?iiaiai aai?eueoii?aia, aeine?aeeoe
aieea aenieioaiia?aoo?iiai a?aeiaeo ia aaeaioiee noai aeii?oeiaeo ?ii?a
ia?aaioeth;

-i?iaiae?coaaoe aieea ?icoii?yaeeoaaiiy e?enoae?/ii? no?oeoo?e
iao?eoeue ia ciaeo?ineii?/i? aeanoeaino? aeoeaaoi?ieo ?ii?a o?iio oa
ia?aaioeth;

-aeine?aeeoe iaoiaeaie iioe/ii? oa AI? niaeo?ineii?? aieea OO- oa
?aioaai?anueeiai aei?ii?ithaaiiy ia iiiie?enoaee Ca(Sr)3Ga2Ge4O14,
La3Ga5Ge(Si)O14, CaxSr3-xGa2Ge4O14, aecia/eoe i???ioaoe?? aieiaieo
iaai?oieo inae ? ia?aiao?e ni?i-aai?eueoii?aia, eieaeueio neiao??th oa
iaeaeeae/a ioi/aiiy iaaaaeaieo ?ii?coth/ei aei?ii?ithaaiiyi
ia?aiaai?oieo oeaio??a (IIOe), anoaiiaeoe ?o i?e?ino?oeoo?o.

O ?iaio? aia?oa:

-I?iaaaeaii nenoaiaoe/ia aeine?aeaeaiiy oa aiae?c niaeo??a AI? ?ii?a
Cr3+ a iiiie?enoaeao Ca(Sr)3Ga2Ge4O14:Cr, La3Ga5Ge(Si)O14:Cr, oa
iiiie?enoaeao oaa?aeeo ?ic/ei?a CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5, 2).
?aeaioeo?eiaai? e?i?? niinoa?aaeoaaieo niaeo??a AI?. Iaoiaeii
AI?-niaeo?ineii?? iieacaii, ui aeoeaaoi?i? ?iie o?iio aoiaeyoue a
1a-ieoaaae?e/i? iiceoe?? oeeo e?enoae?a a o?eaaeaioiiio noai?.

-Niaeo?e AI? ?ii?a Cr3+ a iiiie?enoaeao Ca(Sr)3Ga2Ge4O14:Cr,
La3Ga5Ge(Si)O14:Cr, oa iiiie?enoaeao oaa?aeeo ?ic/ei?a
CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5, 2) iienaii ni?i-aai?eueoii?aiaie
?iia?/ii? neiao???. Anoaiiaeaii ca’ycie i?ae iniaeeainoyie
e?enoaeio?i?/ii? aoaeiae e?enoae?a no?oeoo?iiai oeio o?eaiiaeueiiai
Na-aaeiaa?iaiaoo, cie?aia eiiiiceoe?eiei ?icoii?yaeeoaaiiyi a ??cieo
eao?iiieo eii?aeeiaoe?eieo noa?ao, ? no?oeoo?ith oa ia?aiao?aie niaeo??a
AI? aeii?oeiaeo ?ii?a Cr3+. ?ic?aoiaaii ni?iia? aia?aaoe/i? ??ai? oa
eooia? caeaaeiino? iieiaeaiue e?i?e niaeo??a AI? ieoaaae?e/ieo ?ii?a
Cr3+.

-Aeine?aeaeaii niaeo?e AI?, iioe/iiai iiaeeiaiiy ? ethi?ianoeaioe??
e?enoae?a Sr-aaeiaa?iaiaoo, aeoeaiaaieo ia?aaioeai. Aeine?aeaeaii
iniaeeaino? aoiaeaeaiiy aeoeaaoi?ieo ?ii?a ia?aaioeth a e?enoae?/io
a?aoeo Sr3Ga2Ge4O14, aieea aenieioaiia?aoo?ieo ia?iaie ia ?o aaeaioi?
noaie. Ooi/iaii iiaeeea? aaeaioi? noaie aeoeaaoi?ieo ?ii?a ia?aaioeth a
na?aeiae?iuaieo e?enoaeao Ca3Ga2Ge4O14:Mn. Aecia/aii g-oaeoi?e,
ia?aiao?e iaaeoiiei? no?oeoo?e, oa ioe?iaii ia?aiao?e oiiei? no?oeoo?e
niaeo?o AI? ?ii?a Mn2+ a iiiie?enoaeao Sr3Ga2Ge4O14:Mn i?e oaiia?aoo?ao
O=300 E ? O=77 E. Ioe?iaii ia?aiao?e oiiei? no?oeoo?e niaeo??a AI? ?ii?a
Mn2+ a iiiie?enoaeao Ca3Ga2Ge4O14:Mn. Aeine?aeaeaii eooia? caeaaeiino?
?ioaineaiinoae e?i?e iaaeoiiei? no?oeoo?e ION niaeo?o AI? ?ii?a Mn2+ a
Ca(Sr)3Ga2Ge4O14:Mn.

-Iaoiaeaie iioe/ii? ? AI? niaeo?ineii?? aeine?aeaeaii iaaaaeai?
?ii?coth/ei aei?ii?ithaaiiyi ia?aiaai?oi? oeaio?e a e?enoaeao
Ca3Ga2Ge4O14, Ca3Ga2Ge4O14:Cr, CaxSr3-xGa2Ge4O14, CaxSr3-xGa2Ge4O14:Cr
(x=1, 1.5, 2). Aecia/aii aoaeoeaiee ni?i, i???ioaoe?th aieiaieo
iaai?oieo inae, ia?aiao?e ni?i-aai?eueoii?aia, eieaeueio neiao??th,
iaeaeeae/a ioi/aiiy oeaio??a. Aeine?aeaeaii e?iaoeeo iaeiie/aiiy ?
?iciaaeo oeaio??a. Cai?iiiiiaaia iiaeaeue ?aae?aoe?eieo IIOe
(noaa?eueieo i?e e?iiaoi?e oaiia?aoo??) a Ca3Ga2Ge4O14. Aeine?aeaeaii
?aae?aoe?ei? IIOe a Sr3Ga2Ge4O14.

-I?iaaaeaii ii??aiyeueiee aiae?c niaeo?ineii?/ieo aeanoeainoae ?ii?a
Cr3+ ? Mn2+ a e?enoaeao c? no?oeoo?ith o?eaiiaeueiiai Na-aaeiaa?iaiaoo.
Anoaiiaeaii ?yae oa?aeoa?ieo iniaeeainoae aioo??oiueie?enoae?/iiai iiey
e?enoae?a Ca(Sr)3Ga2Ge4O14, La3Ga5Ge(Si)O14, CaxSr3-xGa2Ge4O14 a
iiceoe?yo eieae?caoe?? aeoeaaoi?ieo ?ii?a.

I?aeoe/ia oe?ii?noue:

1. I?aaenoaaeaia ?iaioa aiineoue nooo?aee aeeaae a niaeo?ineii?th
iiiie?enoae?a c? no?oeoo?ith o?eaiiaeueiiai Na-aaeiaa?iaiaoo.

2. Aecia/ai? ia?aiao?e niaeo??a AI? ?ii?a Cr3+ a e?enoaeao
Ca(Sr)3Ga2Ge4O14:Cr, La3Ga5Ge(Si)O14:Cr, CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5,
2), ?ii?a Mn2+ a e?enoaeao Ca(Sr)3Ga2Ge4O14:Mn iiaeooue aooe aeei?enoai?
aeey oa?aeoa?enoee i?eeaae?a o aeiaaeeo iiaeeeaiai canoinoaaiiy aeaieo
iaoa??ae?a.

3. Aeai? ii aeine?aeaeaiith ?aae?aoe?eieo ia?aiaai?oieo oeaio??a
iiaeooue aooe aaciina?aaeiuei aeei?enoai? i?e noai?aii? ?aae?aoe?eii —
no?eeeo i?eeaae?a ? ioe?iee ?o ?aae?aoe?eii? no?eeino?.

4. Aeine?aeaeaiiy aieeao ?icoii?yaeeoaaiiy e?enoae?/ii? no?oeoo?e ia AI?
oa iioe/i? niaeo?e ?ii?a a?oie cae?ca iiaeooue aooe aeei?enoai? i?e
ooiaeaiaioaeueieo aeine?aeaeaiiyo a aaeoc? o?ceee ?icoii?yaeeiaaieo
nenoai.

Ai?iaaoe?y ?iaioe:

Iaoa??aee aeena?oaoe?? aeiiia?aeaeenue ? iaaiai?thaaeenue ia ianooiieo
eiioa?aioe?yo oa neiiic?oiao:

— 7- eiioa?aioe?? ii ?aae?aoe?eieo aoaeoao a ae?aeaeo?eeao (REI-7)
(Nagoya, Japan 1993);

— 8- eiioa?aioe?? ii ?aae?aoe?ei?e o?ceoe? ? o?i?? iai?aai?/ieo
iaoa??ae?a (?OO-8) (Oiinuee, ?in?y 1993);

— 10- I?aeia?iaeiiio Oaio?eianueeiio neiiic?oi? ii niaeo?ineii??
e?enoae?a aeoeaiaaieo ?iiaie ??aee?niicaiaeueieo oa ia?ao?aeieo
aeaiaio?a (Naieo- Iaoa?ao?a, 1995);

— ui??/ieo ca?oieo iaoeiaeo eiioa?aioe?yo Euea?anueeiai aea?aeaaiiai
i?aa?neoaoo ?iai? ?aaia O?aiea (1994-1999 ??.).

Ioae?eaoe?? ? aianie aaoi?a:

Iniiai? aenia?eiaioaeuei? ?acoeueoaoe io?eiai? iniaenoi aaoi?ii, a
oaeiae iei aeeiiaia /enaeueia ia?iaea ?acoeueoao?a, ?o ?ioa?i?aoaoe?y ?
c?iaeai? aeniiaee. Iniiai? ?acoeueoaoe aeine?aeaeaiue iioae?eiaaii o
iaeeiaaeoeyoe ?iaioao, aeanyoue ?c ieo iaienai? o ni?aaaoi?noa?. A
aaoi?aoa?ao? iaaaaeaii a?n?i iniiaieo ioae?eaoe?e.

No?oeoo?a ? ia’?i ?iaioe:

Aeena?oaoe?y neeaaea?oueny ?c anooio, i’yoe ?icae?e?a, aeniiae?a,
ia?ae?eo aeei?enoaieo e?oa?aoo?ieo aeaea?ae oa aeiaeaoeo. Caaaeueiee
ianya aeena?oaoe?? neeaaea? 168 noi??iie, a yeee aoiaeeoue 121 noi??iea
iniiaiiai iaoeiiieniiai oaenoo, 24 ie?aieo noi??iee caeiathoue 24
?enoiee ? 3 oaaeeoe?, nienie aeei?enoaieo e?oa?aoo?ieo aeaea?ae ?c 141
iaeiaioaaiiy ia 15 noi??ieao ? aeiaeaoie ia 8 noi??ieao.

INIIAIEE CI?NO ?IAIOE

O anooi? iaa?oioiaaia aeooaeuei?noue, iaoeiaa iiaecia ? i?aeoe/ia
oe?ii?noue ?iaioe, noi?ioeueiaaia iaoa ? aeeeaaeaia no?oeoo?a
aeena?oaoe??.

Ia?oee ?icae?e cae?enith? ei?ioeee iaeyae e?oa?aoo?e. A?i i?noeoue iien
e?enoae?/ii? no?oeoo?e iiiie?enoae?a Ca(Sr)3Ga2Ge4O14, La3Ga5Ge(Si)O14.
I?iaiae?ciaaii iiaeeea? oeie ia?aiaai?oieo oeaio??a (IIOe) a e?enoaeao
c? no?oeoo?ith o?eaiiaeueiiai Na-aaeiaa?iaiaoo. ?icaeyaeathoueny
iioeei-ethi?ianoeaioi? oa ia?aiaai?oi? oa?aeoa?enoeee iiiie?enoae?a c?
no?oeoo?ith Ca3Ga2Ge4O14, aeoeaiaaieo ?iiaie aeaiaio?a ia?ao?aeieo a?oi.
?icaeyiooi oa?aeoa?i? iniaeeaino? aeine?aeaeaiiy niaeo??a AI? e?enoae?a
aeaiiai no?oeoo?iiai oeio. Aeeeaaeaii i?iaeaie aeaoaeoiooai?aiiy a
aeine?aeaeoaaieo iaoa??aeao.

Ae?oaee ?icae?e i?enay/aii iaoiaeeeai aenia?eiaioaeueieo aeine?aeaeaiue.
Ei?ioei iienaii oaoiieia?th ae?iuoaaiiy aenieiye?nieo iiiie?enoae?a c?
no?oeoo?ith o?eaiiaeueiiai Na-aaeiaa?iaiaoo. Iienaii iaoiaeeeo
aeine?aeaeaiue niaeo??a AI?, iioe/iiai iiaeeiaiiy ? ethi?ianoeaioe??.
E?enoaee aeey aeine?aeaeaiue aoee io?eiai? ii iaoiaeo *io?aeuenueeiai.
Aeine?aeaeaiiy niaeo??a iioe/iiai iiaeeiaiiy i?iaiaeeeeny ia
niaeo?ioioiiao?? Specord M-40. Niaeo?e ethi?ianoeaioe?? ?a?no?oaaeeny ia
niaeo?aeueii-ethi?ianoeaioiiio eiiieaen? NAeE-2. An? niaeo?e
ei?aeooaaeeny c a?aooaaiiyi niaeo?aeueii? /ooeeaino? nenoaie
?a?no?aoe??. Aeine?aeaeaiiy niaeo??a AI? i?iaiaeeeeny ia na??eiiio
?aae?iniaeo?iiao?? X-ae?aiaciia oeio ?A-1306 a ?aaeei? aeniei/anoioii?
(100 eAoe) iiaeoeyoe?? iaai?oiiai iiey.

O o?aoueiio ?icae?e? iaaaaeai? ?acoeueoaoe niaeo?ineii?? AI?
iiiie?enoae?a Ca(Sr)3Ga2Ge4O14, La3Ga5Ge(Si)O14, CaxSr3-xGa2Ge4O14 (x=1,
1.5, 2), aeoeaiaaieo ?iiaie o?iio. Ia?aiaai?oi? aeanoeaino? aeoeaaoi?ieo
?ii?a Cr3+ a aeine?aeaeoaaieo e?enoaeao iiyniai? a ?aieao iiaeae?
aei?noei? oi/eiai? a?aoee.

A iiiie?enoaeao Ca3Ga2Ge4O14:Cr niinoa??aa?oueny neeaaeiee niaeo? AI?,
yeee a ae?aiacii? ?icai?oee ca?iai?anueeiai iaai?oiiai iiey 200 — 7000 E
neeaaea?oueny ?c aeaio a?oi iaiaeii??aeii ?icoe?aieo e?i?e nooo?ai
??cii? ?ioaineaiino? (i?eia? ?ioaineaiino? e?i?e iaei??? a?oie
a?aeiinyoueny aei i?eiaeo ?ioaineaiinoae e?i?e ae?oai? a?oie ye 1:10).
Aeey e?i?e a?eueoi? ?ioaineaiino? ?Hpp =90 E, iaioi? ?Hpp=40 E. Oe?eia ?
oi?ia e?i?e ci?ith?oueny a caeaaeiino? a?ae i???ioaoe?? c?acea a
iino?eiiio iaai?oiiio iie?. C aiae?co eooiaeo caeaaeiinoae anoaiiaeaii,
ui iiaiee iaai?oiee niaeo? Ca3Ga2Ge4O14:Cr neeaaea?oueny c /anoeiaeo
(aen?aeueii neiao?e/iiai oa ?iia?/ii neiao?e/iiai), aieiai? iaai?oi? in?
z yeeo ia?aeaeuei? aei o?eaiiaeueii? in?, a aieiai? iaai?oi? in? x oa y
?iia?/ii neiao?e/iiai niaeo?o ia?aeaeuei? aei e?enoaeia?ao?/ieo
iai?yie?a oeio <1210>, <1010>. Iaai?oia e?aoi?noue aen?aeueii
neiao?e/iiai niaeo?o ??aia iaeeieoe?, a ?iia?/ii neiao?e/iiai — oanoe.
Anoaiiaeaii, ui ca a?oio ?ioaineaieo e?i?e a?aeiia?aea? aeicaieaiee ii
ni?io aioo??aeoaeaoiee ia?ao?ae (M=-1/2 _ +1/2), a ca a?oio
neaai?ioaineaieo e?i?e — caai?iiaiee ii ni?io aioo??aeoaeaoiee ia?ao?ae
(M=-3/2 _ +3/2) aeii?oeiaeo ?ii?a Cr3+ a 1a- ieoaaae?e/ieo iiceoe?yo
iao?eoe?. E?i?? oiiei? no?oeoo?e niaeo?o AI?, coiiaeai? i?aeaeoaeaoieie
ia?aoiaeaie, aiane?aeie aaeeeiai ii/aoeiaiai ?icuaieaiiy i?ae ni?iiaeie
aeoaeaoaie a X ae?aiacii? a iaaeao ?icai?oee 200 -7000 E ia
niinoa??aathoueny. Eiiiiceoe?eia ?icoii?yaeeoaaiiy a 3f- oao?aaae?e/ieo
iiceoe?yo ia?oi? eao?iiii? eii?aeeiaoe?eii? noa?e iiieaeo? eieaeueio
neiao??th ioi/aiiy aeii?oeiaeo Cr3+ ? a?aeiia?aeii neiao??th
aioo??oiueie?enoae?/iiai iiey a iiceoe?yo ?o eieae?caoe??. A ?acoeueoao?
aiae?co no?oeoo?e aioo??oiueie?enoae?/iiai iiey a ?aieao iiaeae?
aei?noei? oi/eiai? a?aoee iieacaii, ui a caeaaeiino? a?ae eiia?iaoe??
caiiaiaiiy oeeo iiceoe?e eao?iiaie Ga3+ oa Ge4+ a 1a- ieoaaae?e/ieo
iiceoe?yo ooai?ththoueny aeaa oeie oeaio??a Cr3+, iaai?oi? niaeo?e yeeo
iathoue aen?aeueio aai ?iia?/io neiao??th. Eiiiiceoe?eia
?icoii?yaeeoaaiiy o aeueo eii?aeeiaoe?eieo noa?ao i?eaiaeeoue aei
?iceeaeo cia/aiue ii/aoeiaeo ?icuaieaiue ni?iiaeo ??ai?a ? i???ioaoe?e
iaai?oieo inae aeaiaioa?ieo IIOe, ui i?iyaey?oueny a neeueiiio
iaiaeii??aeiiio ?icoe?aii? niinoa?aaeoaaieo e?i?e a?ae IIOe ??cieo
oei?a. Ine?eueee eiaeia niinoa?aaeoaaia e?i?y i?aaenoaaey? niaith a?oio
ia?icae?eaieo e?i?e c aeecueeeie ia?aiao?aie, oi niaeo? AI? ?ii?a Cr3+ a
Ca3Ga2Ge4O14:Cr iiaea aooe iienaiee ni?i-aai?eueoii?aiii (NA) aeaeo:
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 (1)

gi — oaeoi? niaeo?ineii?/iiai ?icuaieaiiy ?-ai ?iia o?iio,

a – iaaiaoii Ai?a, H-aaeoi? iai?oaeaiino? ca?iai?anueeiai iaai?oiiai
iiey,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 -iia?aoi? ni?io i-ai
?iia o?iio, Di , Ei — ia?aiao?e oiiei? no?oeoo?e niaeo?o AI? i-ai ?iia
o?iio. Aecia/ai? ona?aaeiai? cia/aiiy ia?aiao??a NA. Aeey IIOe,
iaai?oiee niaeo? yeeo aieiae?? aen?aeueiith neiao???th: =1.973 ±
0.002, <|D|>=0.9 ± 0.1 ni-1, =0 ± 0.005 ni-1; aeey IIOe, iaai?oiee
niaeo? yeeo aieiae?? ?iia?/iith neiao???th: =1.973±0.004, <|D|>=0.9 ±
0.1 ni-1, =0.068 ± 0.005 ni-1. Ii iaoei ioe?ieai, aieiai? iaai?oi?
in? eieaeueieo IIOe ?iceeaeai? neiao?e/ii iaaeiei e?enoaeia?ao?/ieo
iai?yie?a oeio <0001>, <1010>, <1210> a iaaeao a?ae 0 aei 80. Niaeo? AI?
?ii?a Cr3+ a Sr3Ga2Ge4O14:Cr iaeaea ia a?ae??ciy?oueny a?ae aiaeia?/iiai
niaeo?o ?ii?a Cr3+ a Ca3Ga2Ge4O14:Cr. Iieacaii, ui a?aei?iiino? a
?ioaiceaiinoyo ? oi?iao a?aeiia?aeieo e?i?e niaeo?o coiiaeai? ??cieie
ni?aa?aeiioaiiyie Ga3+/Ge4+ caiiaiaiiy eao?iiieo iiceoe?e a?aoee ? aeaui
a?eueoei ?icoii?yaeeoaaiiyi no?oeoo?e aioo??oiueie?enoae?/iiai iiey
Sr3Ga2Ge4O14. Niinoa?aaeoaaiee niaeo? iienaiee NA (1) c ia?aiao?aie:
aeey oeaio??a, iaai?oiee niaeo? yeeo aieiae?? aen?aeueiith neiao???th
=1.973±0.004, <|D|> = 0.9 ± 0.1 ni-1, = 0 ± 0.01 ni-1;
?iia?/iith neiao???th — =1.973 ± 0.004, <|D|>=0.9 ± 0.1 ni-1, =
0.07 ± 0.01 ni-1. Aeiaeaoeiaa ?icoii?yaeeoaaiiy e?enoae?/ii? a?aoee
CaxSr3-xGa2Ge4O14 a 3a- eao?iiieo iiceoe?yo i?eaiaeeoue eeoa aei
aeiaeaoeiaiai ?icoe?aiiy e?i?e AI? aeoeaaoi?ieo ?ii?a Cr3+.

A ae?aiacii? ?icai?oee ca?iai?anueeiai iaai?oiiai iiey 200 — 7000 A i?e
e?iiaoi?e oaiia?aoo?? a e?enoaeao La3Ga5GeO14, aeoeaiaaieo ?iiaie o?iio,
niinoa??aa?oueny ?ioaineaia iaiaeii??aeii ?icoe?aia e?i?y, oe?eia ?
oi?ia yei? nooo?ai caeaaeaoue a?ae i???ioaoe?? iiiie?enoaea a
ca?iai?anueeiio iaai?oiiio iie? (a i???ioaoe?yo I¦n — AeHpp = 100 A, H-c
— AeHpp = 400 A), ? e?i?y i?eaeecii oaei? ae oe?eie (a i???ioaoe?? I¦n
?? AeHpp = 80 A) oa aeoaea neaai? ?ioaineaiino? (?o i?eia? ?ioaineaiino?
a?aeiinyoueny ye 20:1). Eooia? caeaaeiino? iieiaeaiue niinoa?aaeoaaieo
e?i?e iathoue aen?aeueio neiao??th (z¦n). Iaai?oia e?aoi?noue niaeo?o
??aia iaeeieoe?. Iieacaii, ui ca e?i?th a?eueoi? ?ioaineaiino?
a?aeiia?aea? aeicaieaiee ii ni?io aioo??aeoaeaoiee ia?ao?ae I=-1/2 _
+1/2, ca e?i?th iaioi? ?ioaineaiino? — caai?iiaiee ii ni?io
aioo??aeoaeaoiee ia?ao?ae I=-3/2_+3/2 ieoaaae?e/ieo ?ii?a Cr3+. Neeueia
iaiaeii??aeia ?icoe?aiiy oa iayai?noue neeaaeii? no?oeoo?e e?i?e niaeo?o
AI? aeoeaaoi?ieo ?ii?a Cr3+ coiiaeai? ?icoii?yaeeoaaiiyi e?enoae?/ii?
no?oeoo?e iao?eoe? La3Ga5GeO14. Ona?aaeiai? ia?aiao?e ni?iiaiai
aai?eueoii?aia (1), yeei iienaii niaeo?, io?eiai? ?c aei???a iieiaeaiiy
iaa?aeii? e?i?e oeaio?aeueiiai ia?aoiaeo aeaiaioa?ieo IIOe a
i???ioaoe?yo H¦[0001],
H¦wmetafile8010009000003b50000000300150000000000050000000902000000000400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 ?
H¦wmetafile8010009000003b50000000300150000000000050000000902000000000400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 iaaeeaeaii? ?cio?iiiiai g-oaeoi?a:
=1.971±0.003, <|D|> = 1 ± 0.15 ni-1, = 0 ± 0.03 ni-1.

?c aiae?co niaeo?o AI? iiiie?enoae?a La3Ga5SiO14:Cr oa eiai
i???ioaoe?eieo caeaaeiinoae anoaiiaeaii, ui aeoeaaoi?i? ?iie o?iio
aoiaeyoue a ieoaaae?e/i? iiceoe?? a?aoee eaiaan?oo a o?eaaeaioiiio
noai?. ?o niaeo? AI? oa eiai i???ioaoe?eia caeaaei?noue iaeaea ia
a?ae??ciythoueny a?ae aiaeia?/iiai niaeo?o ?ii?a Cr3+ a La3Ga5GeO14:Cr.
Aeaui a?eueoa ?icoe?aiiy ? e?aua ?icae?eaia no?oeoo?a e?i??
oeaio?aeueiiai ia?aoiaeo iiynith?oueny a?eueoei iiceoe?eiei
?icoii?yaeeoaaiiyi e?enoae?/ii? no?oeoo?e iao?eoe?. Niinoa?aaeoaaiee
niaeo? AI? iienaiee NA (1) c ia?aiao?aie — =1.971±0.003, <|D|> = 1 ±
0.15 ni-1, = 0 ± 0.05 ni-1.

Ioe?iaii eiinoaioo ni?i-i?a?oaeueiiai ca’yceo aeoeaaoi?ieo ?ii?a Cr3+ a
aeine?aeaeoaaieo e?enoaeao. ?? cia/aiiy (? 60 ni-1) aeaco? ia neeueio
nooi?iue eiaaeaioiino? i?ae ?iiii Cr3+ ? o?noueia eeniyie ieoaaae?a.
?ic?aoiaai? eooia? caeaaeiino? iieiaeaiue e?i?e AI? oa ?icuaieaiiy
ni?iiaeo ??ai?a ia?aiaai?oieo Cr3+ a ca?iai?anueeiio iaai?oiiio iie?.
Oe?eia e?i?e niaeo??a AI? ?ii?a Cr3+ a aeine?aeaeoaaieo e?enoaeao ia
caeaaeeoue a?ae oaiia?aoo?e, ui aea? i?aenoaae c?iaeoe i?eiouaiiy i?i ?o
iaiaeii??aeia ?icoe?aiiy.

O /aoaa?oiio ?icae?e? iaaaaeai? ?acoeueoaoe aeine?aeaeaiiy niaeo??a AI?,
iioe/iiai iiaeeiaiiy oa ethi?ianoeaioe?? iiiie?enoae?a
Sr(Ca)3Ga2Ge4O14:Mn. Aeine?aeaeaii iniaeeaino? aoiaeaeaiiy aeoeaaoi?ieo
?ii?a ia?aaioeth oa ci?io ?o aaeaioiiai noaio i?ae ae??th
aenieioaiia?aoo?iiai a?aeiaeo.

A niaeo?? iiaeeiaiiy Sr3Ga2Ge4O14:Mn niinoa??aathoueny oe?ie? nioae c
iaeneioiaie 500 ii (20000 ni-1), 769 ii (13000 ni-1) ? ?ioaineaia
iiaeeiaiiy a OO- iaeano? niaeo?a. Aeey an?o nioa niinoa??aa?oueny
neeueiee aeeo?i?ci. Nioaa a ae?aiacii? 400 – 625 ii (25000-16000 ni-1) a
niaeo?ao iioe/iiai iiaeeiaiiy iiiie?enoae?a Sr3Ga2Ge4O14:Mn
iiynith?oueny aeicaieaieie aeaeo?iiieie ia?aoiaeaie c iniiaiiai ??aiy
5Ag ieoaaae?e/ieo ?ii?a Mn3+ ia eiiiiiaioe 5A1, 5A2 oa?ia 5T2g,
?icuaieaiiai i?ae ae??th o?eaiiaeueiiai iiey, a neaai?ioaineaia nioaa
iiaeeiaiiy c iaeneioiii i?e 769 ii (13000 ni-1) — ia?aoiaeii 5Ag _ 5T2g
(5A2). ?ioaineaia aeiaeaoeiaa iiaeeiaiiy, coiiaeaia ia?aaioeai a
iaeano?, yea i?eieea? aei e?ath ooiaeaiaioaeueiiai iiaeeiaiiy
iia’yco?oueny c? nioaith ia?aiino ca?yaeo I2- _ Mn3+.

Iieacaii, ui aeoeaaoi?i? ?iie ia?aaioeth aoiaeyoue a e?enoae?/io a?aoeo
Sr3Ga2Ge4O14 a ieoaaae?e/i? iiceoe?? oaeiae a aeaiaaeaioiiio noai?.
Ca?yaeiaa eiiiainaoe?y i?e cai?uaii? Mn2+_Ga3+ (Ge4+) iiaea
cae?enithaaoenue ca ?aooiie ia?a?iciiae?eo eao?ii?a Ga3+ ? Ge4+ ii 3f- ?
1a-iiceoe?yi no?oeoo?e. I?e caoaeaeaii? Sr3Ga2Ge4O14:Mn acioiei eaca?ii
i?e 300 E niinoa??aa?oueny oe?ieinioaiaa ethi?ianoeaioe?y c iaeneioiii
i?e 625 ii (16000 ni-1), yea ? oa?aeoa?iith aeey ?ii?a Mn2+ a
ieoaaae?e/iiio ioi/aii? (ia?ao?ae 4O1 _ 6A1). A c?aceao Sr3Ga2Ge4O14:Mn
i?e O=300 E niinoa??aa?oueny niaeo? AI? a?ae ieoaaae?e/ieo ?ii?a Mn2+
(3d5 , 6S5/2 ), yeee a i???ioaoe?? I¦n neeaaea?oueny c aeia?a
?icae?eaieo oanoe e?i?e iaaeoiiei? no?oeoo?e (ION) (a?ae yaea? ?cioii?a
55Mn, I=5/2) oeaio?aeueiiai ia?aoiaeo (I=-1/2 _ +1/2) ? neeueii
?icoe?aieo e?i?e oiiei? no?oeoo?e (ON) (I=±1/2 _ ±3/2, I=±3/2 _ ±5/2) c
ia?icae?eaiith ION. E??i iniiaieo e?i?e iiaeeiaiiy a i???ioaoe?? I¦z¦n
niinoa??aathoueny e?i?? iaioi? ?ioaineaiino?, ?ici?uai? iiia?ii i?ae
e?i?yie oeaio?aeueiiai ia?aoiaeo, coiiaeai? caai?iiaieie ia?aoiaeaie c
iaeii/aniith ci?iith ni?ia aeaeo?iia ? yae?a ia 1. Iaiaeii??aeia
?icoe?aiiy e?i?e niaeo?o AI? ? niinoa?aaeaiiy e?i?e caai?iiaieo
ia?aoiae?a a i???ioaoe?? I¦z iiynith?oueny ?icoii?yaeeoaaiiyi
e?enoae?/ii? no?oeoo?e Sr3Ga2Ge4O14. ?c aei???a iieiaeaiue e?i?e niaeo?o
AI? a i???ioaoe?? I¦z aecia/ai? cia/aiiy g =1.9983, eiinoaioe
iaaeoiieiai ?icuaieaiiy A =(8.39±0.05)·10-3 ni-1 ? ioe?iaii cia/aiiy
ia?aiao?o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0.045 ± 0.006 ni-1. A
ca’yceo c neeueiei ?icoe?aiiyi e?i?e aieiaeo ia?aoiae?a (I=±1/2 _ ±3/2,
I=±3/2 _ ±5/2) ? neeueiith i???ioaoe?eiith caeaaei?noth ?ioaineaiino?
e?i?e niaeo?o aecia/aiiy cia/aiue iiaiiai iaai?o ia?aiao??a oiiei?
no?oeoo?e iia’ycaii ?c cia/ieie o?oaeiiuaie.

A na?aeiae?iuaieo e?enoaeao Na3Ga2Ge4O14:Mn i?e O=300 E ca?a?no?iaaii
niaeo? AI? ieoaaae?e/io ?ii?a Mn2+ neaai? ?ioaineaiino?. E?i?? oiiei?
no?oeoo?e niaeo?o AI? ?icae?eai? e?aua, a e?i?? a?ae caai?iiaieo ii
yaea?iiio ni?io ia?aoiae?a iathoue iaioo ?ioaineai?noue i?ae a
aiaeia?/iiio niaeo?? ?ii?a Mn2+ a Sr3Ga2Ge4O14:Mn. A?aei?iiino? niaeo??a
AI? Ca3Ga2Ge4O14:Mn a?ae Sr3Ga2Ge4O14:Mn iiyniai? ??cieie
ni?aa?aeiioaiiyie Ga3+/Ge4+ caiiaiaiiy 1a- ? 3f- iiceoe?e ? iaioei
?icoii?yaeeoaaiiyi no?oeoo?e aioo??oiueoe?enoae?/iiai iiey Ca3Ga2Ge4O14.
Neeueia eooiaa caeaaei?noue ?ioaineaiinoae eiiiiiaio ION niaeo?o AI?
aeoeaaoi?ieo ?ii?a Mn2+ iiynith?oueny cia/iei ii/aoeiaei ?icuaieaiiyi
ni?iiaeo aia?aaoe/ieo ??ai?a.

Anoaiiaeaii, ui a ?acoeueoao? a?aeiaeo o aaeooi? (O=1000 E) c?ace?a
Ca(Sr)3Ga2Ge4O14:Mn ca ?aooiie aeeooc?? ? aeoiaeo c e?enoae?a ?ii?a
eenith a?aeaoaa?oueny a?aeiiaeaiiy /anoeie ?ii?a In3+ aei Mn2+. I?e
iine?aeoth/iio a?aeiae? a aoiinoa?? eenith a?aeaoaa?oueny cai?ioiy
ia?aca?yaeea. C?iaeaii i?eiouaiiy i?i aoiaeaeaiiy aeoeaaoi?ieo ?ii?a
ia?aaioeth a e?enoae?/io a?aoeo Sr3Ga2Ge4O14 a /ioe?eaaeaioiiio noai?.

O i’yoiio ?icae?e? i?aaenoaaeai? ?acoeueoaoe aeine?aeaeaiue iaoiaeaie
AI? ? iioe/ii? niaeo?ineii?? iaaaaeaieo OO- oa ?aioaai?anueeei
aei?ii?ithaaiiyi ia?aiaai?oieo oeaio??a a e?enoaeao Ca(Sr)3Ga2Ge4O14,
CaxSr3-xGa2Ge4O14 (x=1, 1.5, 2).

I?ney ii?ii?iaiiy OO- na?oeii a Ca3Ga2Ge4O14 niinoa??aa?oueny neeaaeiee
niaeo? AI? a ?aeii? g-oaeoi?a a?eueiiai aeaeo?iia, yeee neeaaea?oueny c
aeaio niaeo??a nooo?ai ??cii? ?ioaineaiino? (ni?aa?aeiioaiiy
?ioaineaiinoae 7:1) ? coiiaeaiee oeaio?aie aeaio oei?a IIOe1 ? IIOe2. C
aiae?co niaeo?o a?eueoi? ?ioaineaiino? (a?ae IIOe1) oa eiai
i???ioaoe?eieo caeaaeiinoae anoaiiaeaii, ui a?i neeaaea?oueny ?c oanoe
e?i?e a?ae ia?aiaai?oieo oeaio??a c aoaeoeaiei ni?iii 1/2 a oanoe
iaai?oii-iaaea?aaeaioieo iiceoe?yo. Niinoa?aaeoaaiee niaeo? iienaiee NA
aeaeo:

H = a(gx Hx Sx + gy Hy Sy + gz Hz Sz) (2)

c ia?aiao?aie iaaaaeaieie a oaaeeoe?

Cia/aiiy g-oaici?ae0oe0IIOe1gz=2.0029 ± 0.0005

gx=2.0180 ± 0.001

gy=2.0134 ± 0.00172.3 (67)

72.3

17.74.8 (5.3)

94.8

4.8IIOe2gz=2.0053±0.001

gx=2.0186±0.001

gy=2.0160±0.00190

90

00

90

0

I?ei?oea. ?, e — eooe a noa?e/i?e nenoai? eii?aeeiao a?aeiinii inae
ae?oaiai ? o?aoueiai ii?yaeeo a?aeiia?aeii, a aeoaeeao iaaaaeaii
iai?yiie ca’yceo O(2)-Ge(2d).

Niaeo? iaioi? ?ioaineaiino? neeaaea?oueny c o?ueio e?i?e c AeHpp=6 E, ?
iienaiee NA (1) c ia?aiao?aie iaaaaeaieie a oaaeeoe?. Iieacaii, ui
iaaaaeai? ii?ii?iaiiyi ia?aiaai?oi? oeaio?e coiiaeththoue nioao AeI c
iaeneioiii i?e 330 ii. E?iaoeea iaeiie/aiiy IIOe1 ? IIOe2 ia?
noae?i?eiee oa?aeoa? ? oaiaeaioe?th aei iane/aiiy. ?o oaiia?aoo?ia
iaeanoue noaa?eueiino? i?inoyaa?oueny aei 380 E. Aeey iieno
iaai?oii-?aciiainieo ? iioe/ieo aeanoeainoae aeine?aeaeoaaieo oeaio??a
cai?iiiiiaaia iiaeaeue – ae??ea eieae?ciaaia ia ai?ii? eenith a
caaaeueieo 6g- iiceoe?yo no?oeoo?e, yeee aoiaeeoue aei neeaaeo
iie?aae?a, eii?aeeioth/iai 2d- eao?iii? iiceoe??, noaa?e?ciaaia
aaeain??th eao?iia Ge4+ a 2d- iiceoe??. ?aeaioe/i? oeaio?e
ooai?ththoueny i?ney ae?? OO- oa ?aioaai?anueeiai aei?ii?ithaaiiy a
iiiie?enoaeao Ca3Ga2Ge4O14:Cr, CaxSr3-xGa2Ge4O14, CaxSr3-xGa2Ge4O14:Cr.

I?ney OO- ii?ii?iaiiy a iiiie?enoaeao Sr3Ga2Ge4O14 i?e 300 E
ca?a?no?iaaii neeaaeio nioao AeI a iaeano? 260-550 ii ? niaeo? AI? a
iaeano? g-oaeoi?a a?eueiiai aeaeo?iia, yeee neeaaea?oueny ?c oanoe e?i?e
c AeHpp=10 E ? o?ueio e?i?e c AeHpp=40 E . E?iaoeea iaeiie/aiiy IIOe,
ye? aeeeeeathoue aeiaeaoeiaa iiaeeiaiiy a iaeano? 260 — 550 ii ? niaeo?
AI? ia? noae?i?eiee oa?aeoa? ? oaiaeaioe?th aei iane/aiiy. Iaaaaeai?
IIOe ianoaa?euei? i?e e?iiaoi?e oaiia?aoo?? ? noaa?euei? i?e oaiia?aoo??
??aeeiai acioo. Ia iaoo aeoieo ca niinoa?aaeoaai? niaeo?e
a?aeiia?aeathoue ooai?ai? a ?acoeueoao? ii?ii?iaiiy I- oeaio?e a
caaaeueieo 6g- iiceoe?yo a?aoee.

A iii?iaeueii /enoeo iiiie?enoaeao La3Ga5Ge(Si)O14 i?e e?iiaoi?e
oaiia?aoo?? i?ney OO- ? ?aioaai?anueeiai ii?ii?iaiiy IIOe ia
ca?a?no?iaai?.

O aeiaeaoeao aei aeena?oaoe?? c?a?aii ?enoiee ? oaaeeoe?, ye?
aeiiiiaaathoue e?aua c?icoi?oe nooue iienaieo yaeu.

INIIAI? ?ACOEUeOAOE ? AENIIAEE

1.Neioaciaaii iiiie?enoaee Ca(Sr)3Ga2Ge4O14, Ca(Sr)3Ga2Ge4O14:Cr,
La3Ga5Ge(Si)O14:Cr, Sr(Ca)3Ga2Ge4O14:Mn, CaxSr3-xGa2Ge4O14: Cr (x=1,
1.5, 2) aeniei? iioe/ii? yeino? ? o?i?/ii? /anoioe.

2.Aeine?aeaeaii niaeo?e AI? iiiie?enoae?a Ca(Sr)3Ga2Ge4O14:Cr,
La3Ga5Ge(Si)O14:Cr, Sr(Ca)3Ga2Ge4O14:Mn, CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5,
2), niaeo?e iioe/iiai iiaeeiaiiy oa ethi?ianoeaioe?? e?enoae?a
Ca(Sr)3Ga2Ge4O14:Mn, aieea aenieioaiia?aoo?iiai a?aeiaeo (800 — 1200
E) ia aaeaioiee noai aeoeaaoi?ieo ?ii?a ia?aaioeth. I?iaaaeaia
?aeaioeo?eaoe?y iioe/ieo oa AI? niaeo??a, cai?iiiiiaai? noaie
aia?aaoe/ieo ia?aoiae?a. I?iaiae?ciaaii aieea eiiiiceoe?eiiai
?icoii?yaeeoaaiiy a?aoee ia niaeo?ineii?/i? aeanoeaino? aeoeaaoi?ieo
?ii?a Cr3+ oa Mn2+. I?iaaaeaii ii??aiyeueiee aiae?c iioe/ieo ? AI?
niaeo??a ?ii?a Cr3+ oa Mn2+ a aeine?aeaeoaaieo iiiie?enoaeao.

3.Anoaiiaeaii iaoiaeii AI? niaeo?ineii??, ui aeoeaaoi?i? ?iie o?iio
aoiaeyoue a e?enoae?/io a?aoeo Ca(Sr)3Ga2Ge4O14:Cr,
La3Ga5Ge(Si)O14 :Cr, CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5, 2) a o?eaaeaioiiio
noai? a 1a- oeoaaae?e/i? iiceoe??. A caeaaeiino? a?ae eiia?iaoe??
caiiaiaiiy 3f- oao?aaae?e/ieo iiceoe?e ia?oi? eao?iiii?
eii?aeeiaoe?eii? noa?e a e?enoaeao Ca(Sr)3Ga2Ge4O14:Cr,
CaxSr3-xGa2Ge4O14:Cr ooai?ththoueny aeaa oeie oeaio??a Cr3+, /anoeia?
iaai?oi? niaeo?e yeeo iathoue aen?aeueio ? ?iia?/io neiao??th oa
iaai?oio e?aoi?noue 1 ? 6 a?aeiia?aeii. Iaai?oi? in? x ? y ?iia?/ieo
niaeo??a ia?aeaeuei? aei e?enoaeia?ao?/ieo iai?yie?a oeio <1210> ?
<1010>, a iaai?oi? in? z iaio oei?a oeaio??a ia?aeaeuei? aei
o?eaiiaeueii? in?. ??ci? ?ioaineaiino? ? oi?ie e?i?e a?aeiia?aeieo
/anoeiaeo niaeo??a AI? a Na- oa Sr- aaeiaa?iaiaoao coiiaeai? ??cieie
ni?aa?aeiioaiiyie Ga3+/Ge4+ caiiaiaiiy eao?iiieo iiceoe?e no?oeoo?e.
Aeiaeaoeiaa ?icoii?yaeeoaaiiy a 3a-iiceoe?yo a iiiie?enoaeao oaa?aeeo
?ic/ei?a CaxSr3-xGa2Ge4O14:Cr i?eaiaeeoue aei aeiaeaoeiaiai ?icoe?aiiy
e?i?e niaeo?o AI? aeoeaaoi?ieo ?ii?a Cr3+.

4.Aeoeaaoi?i? ?iie o?iio ooai?ththoue a ieoaaae?e/ieo iiceoe?yo
e?enoae?/ii? a?aoee La3Ga5Ge(Si)O14:Cr, ia?aiaai?oi? oeaio?e Cr3+,
iaai?oi? niaeo?e yeeo, yeui ia a?aoiaoaaoe neeaaeio ia?icae?eaio
no?oeoo?o e?i?e niaeo?o AI?, iathoue aen?aeueio neiao??th ? iaai?oio
e?aoi?noue ??aio iaeeieoe?. ?icoii?yaeeoaaiiy e?enoae?/ii? no?oeoo?e
iao?eoe? coiiaeth? neeueia iaiaeii??aeia ?icoe?aiiy ? iiaaii ?icae?eaio
no?oeoo?o e?i?e niinoa?aaeoaaieo niaeo??a AI?. Anoaiiaeaii, ui
eiiiiceoe?eia ?icoii?yaeeoaaiiy a ae?oa?e eao?iii?e eii?aeeiaoe?ei?e
noa?? ii a?aeiioaiith aei iiceoe?e caiyoeo aeii?oeiaeie ?iiaie o?iio
a?aeiia?aea? ca neeaaeio ia?icae?eaio no?oeoo?o e?i?e niaeo?o. E?aua
?icae?eaiiy no?oeoo?e e?i?e niaeo?o AI? ?ii?a Cr3+ a La3Ga5SiO14:Cr
ii??aiyii c La3Ga5GeO14:Cr coiiaeaia a?eueoei iiceoe?eiei
?icoii?yaeeoaaiiyi iao?eoe? La3Ga5SiO14.

5.Niinoa?aaeoaai? niaeo?e AI? ?ii?a Cr3+ a e?enoaeao c? no?oeoo?ith
o?eaiiaeueiiai Na-aaeiaa?iaiaoo iienaii NA ?iia?/ii? neiao??? aeey ni?io
3/2. Aecia/ai? eiai ia?aiao?e oa ?o iaeneiaeuei? ?iceeaee. ?ic?aoiaaii
eooia? caeaaeiino? iieiaeaiue e?i?e niaeo??a AI? oa ?icuaieaiiy
ni?iiaeo aia?aaoe/ieo ??ai?a ?ii?a Cr3+ a ca?iai?anueeiio iaai?oiiio
iie? aeey ??cieo i???ioaoe?e.

6.Anoaiiaeaii iaoiaeaie iioe/ii? oa AI? niaeo?ineii??, ui aeoeaaoi?i??
?iie ia?aaioeth iiaeooue aoiaeeoe a e?enoae?/i? a?aoee Na- oa Sr-
aaeiaa?iaiao?a ye a o?e oae ? a aeaiaaeaioiiio noai? a 1a-ieoaaae?e/i?
iiceoe??. Ni?aa?aeiioaiiy In2+/Mn3+ ? a?eueoei ia ii?yaeie o
Sr3Ga2Ge4O14:Mn. Aenieioaiia?aoo?iee a?aeiae (O=1000 E) o aaeooi?
i?eaiaeeoue aei a?aeiiaeaiiy /anoeie ?ii?a In3+ aei In2+,
iine?aeoth/ee a?aeiae a aoiinoa?? eenith i?eaiaeeoue aei cai?ioiuei?
ia?aca?yaeee. Aecia/ai? g- oaeoi? ? eiinoaioa iaaeoiieiai ?icuaieaiiy,
ioe?iai? ia?aiao?e oiiei? no?oeoo?e niaeo?o AI? ?ii?a In2+ oa ?o
iaeneiaeuei? ?iceeaee. Iieacaii, ui iaiaeii??aeia ?icoe?aiiy
niinoa?aaeoaaieo e?i?e AI? oa iioe/ieo niaeo??a, a?aenooi?noue
?icae?eaii? iaaeoiiei? no?oeoo?e aieiaeo e?i?e oiiei? no?oeoo?e niaeo?a
AI? ?ii?a In2+, iayai?noue e?i?e a?ae caai?iiaieo ii yaea?iiio ni?io
ia?aoiae?a a i???ioaoe?? I¦[0001], coiiaeaii ?icoii?yaeeiaai?noth
e?enoae?/ii? a?aoee. Iieacaii, ui neeueia eooiaa caeaaei?noue
?ioaineaiinoae eiiiiiaio ION niaeo?a AI? ?ii?a Mn2+ a
Ca(Sr)3Ga2Ge4O14:Mn coiiaeaia cia/iei ii/aoeiaei ?icuaieaiiyi ni?iiaeo
aia?aaoe/ieo ??ai?a Mn2+ e?enoae?/iei iieai.

7.Aeine?aeaeaii aieea OO- oa ?aioaai?anueeiai aei?ii?ithaaiiy ia iioe/i?
oa AI? niaeo?e iiiie?enoae?a Na- oa Sr- aaeiaa?iaiao?a ? iiiie?enoae?a
oaa?aeeo ?ic/ei?a CaxSr3-xGa2Ge4O14 (x=1, 1.5, 2) Iieacaii, ui i?ae
ae??th OO- oa ?aioaai?anueeiai aei?ii?ithaaiiy a iiiie?enoaeao
Ca3Ga2Ge4O14 ooai?ththoueny ia?aiaai?oi? oeaio?e, ye? a?aeiia?aeathoue
ca nioao aeiaeaoeiaiai iiaeeiaiiy c iaeneioiii i?e 330 ii oa niaeo? AI?
a iaeano? g-oaeoi?a a?eueiiai aeaeo?iia. Niaeo? AI? iienaiee NA
?iia?/ii? neiao??? aeey ni?io 1/2, aecia/ai? eiai ia?aiao?e oa
i???ioaoe?? aieiaieo iaai?oieo inae. Cai?iiiiiaaia iiaeaeue oeaio?o —
ae??ea eieae?ciaaia ia eeni? a caaaeueieo 6g- iiceoe?yo, yeee aoiaeeoue
aei neeaaeo iie?aae?a, eii?aeeioth/iai 2d- eao?iii? iiceoe??,
noaa?e?ciaaia aaeain??th eao?iia Ge4+ a 2d-iiceoe?yo a?aoee. Anoaiiaeaii
iaeaeeae/a ioi/aiiy oeueiai I—oeaio?a. Aiaeia?/i? oeaio?e aeieeathoue a
iiiie?enoaeao Ca3Ga2Ge4O14:Cr, CaxSr3-xGa2Ge4O14, CaxSr3-xGa2Ge4O14:Cr
(x=1, 1.5, 2)

8.Iieacaii, ui OO-ii?ii?iaiiy i?eaiaeeoue aei ooai?aiiy a e?enoaeao
Sr3Ga2Ge4O14 ae??eiaeo I- -oeaio??a (ianoaa?eueieo i?e e?iiaoi?e
oaiia?aoo??), ye? a?aeiia?aeaeuei? ca neeaaeiee niaeo? AI? a ?aeii? g-
a?eueiiai aeaeo?iia ? nioao aeiaeaoeiaiai iiaeeiaiiy a iaeano? 260-550
ii.

INIIAI? ?ACOEUeOAOE AeENA?OAOe?? AEEEAAeAI? A ?IAIOAO:

1.Iinaiei A.A., Eauoe ?.A., Iaaeeye A.A., Naeueneee A.A. ?aaeeaoeeiiiua
ia?aiaaieoiua oeaio?u a e?enoaeeao
Ca3Ga2Ge4O14//OOO.-1997.-O.39,N6.-C.1044-1049.

2.Iinaiei A.A., Eauoe ?.A., Naeueneee A.A., E?aa/eoei A.A. Iioe/aneay e
YI? niaeo?ineiiey eiiia ia?aaioea a e?enoaeeao Sr3Ga2Ge4O14
//AEIN.-1997.-O.64, N6.-C.779-783.

3.Iinaiei A.?., Naeuenueeee A.A. Niaeo?ineii?y AI? iiiie?enoae?a
La3Ga5GeO14:Cr//OOAE.- 1998.-O.-43, N1.-N.70-73.

4.Iinaiei A.A., Naeueneee A.A. Niaeo?ineiiey YI? iiiie?enoaeeia
La3Ga5SiO14:Cr//AEIN.-1998.-O.65,N6.-N.942-945.

5.Oiia ss.?., Iinaiei A.?., E?aa/oe I.I., Naeuenueeee A.A. Iioe/ia
ai?cio?ii?y iiiie?enoae?a a?oie aaeiaa?iaiao?a // OOAE.- 1998.-O.43,
N8.-C.1002-1004.

6.Nosenko A.Y., Leshchuk R.Ye., Padlayk B.V., Selskii A.A. Radiation
Paramagnetic Centers in Ca3Ga2Ge4O14 Crystals// Abstracts of Conferens
on Radiation Effects in Insulators 7 (REI-7) September 6-10. –Nagoya,
Japan.-1993.-P232-233.

7.Iinaiei A.A., Iaaeeye A.A., Eauoe ?.A., Naeueneee A.A. ?aaeeaoeeiiiua
ia?aiaaieoiua oeaio?u a e?enoaeeao Ca3Ga2Ge4O14 // Oacenu aeieeaaea 8-e
eiioa?aioeee ii ?aaeeaoeeiiiie oeceea e oeiee iai?aaie/aneeo iaoa?eaeeia
(?OO-8).-Oiine.-1993.-N.-67.

8.Kravchishin V.V., Leshchuk R.Ye., Nosenko A.E., Padlayk B.V., Selskii
A.A. Spectroscopy of impurity chromium and manganese ions in crystals
with Ca- gallogermanate structure// Abstracts of 10 International
Feofiolov Symposium on Spectroscopy of Crystals Activited by Rare Earth
and Transitional Ions.-Saint-Petersburg.-1995.-P.227-228.

Naeuenueeee Aiae??e Aiaoie?eiae/. Aeii?oeia? oa ?aae?aoe?ei?
ia?aiaai?oi? oeaio?e a iiiie?enoaeao c? no?oeoo?ith o?eaiiaeueiiai Na-
aaeiaa?iaiaoo. –?oeiien.

Aeena?oaoe?y ia caeiaoooy iaoeiaiai nooiaiy eaiaeeaeaoa
o?ceei-iaoaiaoe/ieo iaoe ca niaoe?aeuei?noth 01.04.10 – o?ceea
iai?ai?ia?aeiee?a ? ae?aeaeo?ee?a.-Euea?anueeee aea?aeaaiee oi?aa?neoao
?iai? ?aaia O?aiea, I?i?noa?noai ina?oe Oe?a?ie, Euea?a, 1999.

Aeena?oaoe?y i?enay/aia aea/aiith aeii?oeiaeo oa iaaaaeaieo ?ii?coth/ei
aei?ii?ithaaiiyi ia?aiaai?oieo oeaio??a a aoeaio?e/ieo ?icoii?yaeeiaaieo
niieoeao c? no?oeoo?ith o?eaiiaeueiiai Na- aaeiaa?iaiaoo. Aeine?aeaeai?,
iienai? ? i?iaiae?ciaai? niaeo?e AI? iiiie?enoae?a Ca(Sr)3Ga2Ge4O14:Cr,
La3Ga5Ge(Si)O14:Cr, Sr(Ca)3Ga2Ge4O14:Mn, CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5,
2), niaeo?e iioe/iiai iiaeeiaiiy oa ethi?ianoeaioe?? e?enoae?a
Ca(Sr)3Ga2Ge4O14:Mn, aeine?aeaeaii aieea aenieioaiia?aoo?iiai a?aeiaeo
(800 — 1200 E) a ??cieo aoiinoa?ao ia aaeaioiee noai aeoeaaoi?ieo
?ii?a ia?aaioeth. Anoaiiaeaii aaeaioiee noai, iiceoe?? eieae?caoe??
aeoeaaoi?ieo ?ii?a o?iio oa ia?aaioeth, aecia/ai? ia?aiao?e ni?iiaiai
aai?eueoii?aio, cai?iiiiiaai? e?enoaeia?ao?/i? iiaeae? aeoeaaoi?ieo
oeaio??a Cr3+ oa Mn2+, anoaiiaeaii oa?aeoa?i? iniaeeaino? e?enoae?/iiai
iiey a iiceoe?yo ?o eieae?caoe??.

Aeine?aeaeaii iaoiaeaie iioe/ii? ? AI? niaeo?ineii?? iaaaaeai? OO ?
?aioaai?anueeei aei?ii?ithaaiiyi ia?aiaai?oi? oeaio?e a e?enoaeao
Ca(Sr)3Ga2Ge4O14. CaxSr3-xGa2Ge4O14 (x=1, 1.5, 2). Aeine?aeaeaia
e?iaoeea iaeiie/aiiy ? ?iciaaeo oeeo oeaio??a, aecia/aia ?o eieaeueia
neiao??y, iaeaeeae/a ioi/aiiy, aieiai? cia/aiiy oa i???ioaoe?y aieiaieo
inae g-oaici?a. Cai?iiiiiaaia iiaeaeue ?aae?aoe?eieo ia?aiaai?oieo
oeaio??a a Ca3Ga2Ge4O14.

Eeth/ia? neiaa: Aeaeo?iiiee ia?aiaai?oiee ?aciiain, iioe/ia
niaeo?ineii?y, e?enoaee c? no?oeoo?ith o?eaiiaeueiiai Na-aaeiaa?iaiaoo,
aeii?oeiaee ?ii, ia?aiaai?oiee oeaio?, ni?iiaee aai?eueoii?ai.

Naeueneee Aiae?ae Aiaoieueaae/. I?eianiua e ?aaeeaoeeiiiua ia?aiaaieoiua
oeaio?u a iiiie?enoaeeao ni no?oeoo?ie o?eaiiaeueiiai Na-
aaeeiaa?iaiaoa. -?oeiienue.

Aeenna?oaoeey ia nieneaiea o/aiie noaiaie eaiaeeaeaoa
oeceei-iaoaiaoe/aneeo iaoe ii niaoeeaeueiinoe 01.04.10 – oeceea
iieoi?iaiaeieeia e aeeyeaeo?eeia. Ieienoa?noai ia?aciaaiey Oe?aeiu,
Eueaia, 1999.

Aeenna?oaoeey iinayuaia eco/aieth i?eianiuo e iaaaaeaiiuo eiiece?othuei
eceo/aieai ia?aiaaieoiuo oeaio?ia a aoeaio?e/aneeo ?icoii?yaei/aiiuo
niaaeeiaieyo ni no?oeoo?ie o?eaiiaeueiiai Na- aaeeiaa?iaiaoa.
Enneaaeiaaiu, iienaiu e i?iaiaeece?iaaiu niaeo?u YI? iiiie?enoaeeia
Ca(Sr)3Ga2Ge4O14:Cr, La3Ga5Ge(Si)O14:Cr, Sr(Ca)3Ga2Ge4O14:Mn,
CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5, 2), niaeo?u iioe/aneiai iiaeiuaiey e
ethieianoeaioeee iiiie?enoaeeia Ca(Sr)3Ga2Ge4O14:Mn, enneaaeiaaii
aeeyiea aunieioaiia?aoo?iiai ioaeeaa (800 – 1200 E) ia aaeaioiia
ninoiyiea aeoeaaoi?iuo eiiia ia?aaioea. Ii?aaeaeaii aaeaioiia ninoiyiea,
iiceoeee eieaeecaoeee aeoeaaoi?iuo eiiia o?iia e ia?aaioea, ii?aaeaeaiu
ia?aiao?u nieiiaiai aaieeueoiieaia, i?aaeeiaeaiu e?enoaeeia?aoe/aneea
iiaeaee aeoeaaoi?iuo oeaio?ia Cr3+ e Mn2+, onoaiiaeaii oa?aeoa?iua
iniaaiiinoe e?enoaeee/aneiai iiey a iiceoeeyo eo eieaeecaoeee.

Enneaaeiaaii iaoiaeaie iioe/aneie e YI? niaeo?ineiiee iaaaaeaiiua OO- e
?aioaaiianeei eceo/aieai ia?aiaaieoiua oeaio?u a e?enoaeeao
Ca(Sr)3Ga2Ge4O14, CaxSr3-xGa2Ge4O14 (x=1, 1.5, 2). Enneaaeiaaia eeiaoeea
iaeiieaiey e ?iciaaea yoeo oeaio?ia, ii?aaeaeaia eo eieaeueiay
neiiao?ey, aeeaeaeoaa ie?oaeaiea, aeaaiua cia/aiey e i?eaioaoeey aeaaiuo
inae g- oaici?a. I?aaeeiaeaia iiaeaeue ?aaeeaoeeiiiuo ia?aiaaieoiuo
oeaio?ia a Ca3Ga2Ge4O14.

Sel’skyy A.A. Impurity and radiation-induced paramagnetic centres in
single crystals with trigonal Ca – gallogermanate structure.
-Manuscript.

Thesis on search of the scientific degree of candidate of physical and
mathematical science, specialty 01.04.10 – Physics of Semiconductors and
Insulators. Lviv Ivan Franco State University, Ukrain, 1999.

This thesis is devoted to study the impurity and induced by ionizing
radiation paramagnetic centres in acentric disodered compounds with
trigonal Ca-gallogermanate structure. EPR spectra of
Ca(Sr)3Ga2Ge4O14:Cr, La3Ga5Ge(Si)O14:Cr, Sr(Ca)3Ga2Ge4O14:Mn,
CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5, 2) single crystals, optical absorbtion
and luminescence spectra of Ca(Sr)3Ga2Ge4O14:Mn single crystals have
been investigated, described and analyzed. Influence of high –
temperature treatments (800-1200 K) on the valence state of activator
manganese ions was investigated in differrent atmospheres. The valence
states, the positions of localization of Cr3+ and Mn2+ activator ions,
the parameters of spin-Hamiltonian are established. Crystallografic
models of Cr3+ and Mn2+ impurity centres are proposed and typical
peculiarities of crystal field in positions of localization of these
ions are determined. The paramagnetic centres in Ca(Sr)3Ga2Ge4O14,
CaxSr3-xGa2Ge4O14 (x=1, 1.5, 2) crystals induced by UV- and
X-irradiation have been investigated by the methods of optical and EPR
spectroscopy.

Activator chromium ions incorporate in the Ca(Sr)3Ga2Ge4O14:Cr,
La3Ga5Ge(Si)O14:Cr, CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5, 2) lattices in a
three-valence state in 1a- octahedral positions, as it was founded by
the method of EPR-spectroscopy. In the Ca(Sr)3Ga2Ge4O14:Cr,
CaxSr3-xGa2Ge4O14:Cr (x=1, 1.5, 2) crystals two types of Cr3+ centres
are formed depending on the combination of occupation of the 3f-
tetrahedral position in the first cation coordinative sphere by the Ga3+
and Ge4+ ions. Partial magnetic spectra of such centres have axial and
rhombic symmetry type and their magnetic multiplicity are equal to 1 and
6 respectively. Magnetic axes x and y of the rhombic spectra are a
parallel to the crystallografic directions like to <1210> and <1010>
type and the magnetic axes z of both of such centres are parallel to the
trigonal axis. Diferencies in intensity and in lineshape of EPR spectra
for both type of centres in Ca3Ga2Ge4O14:Cr and Sr3Ga2Ge4O14:Cr are due
to differencies in occupation of cation position by Ga3+ and Ge4+ ions.
Activator chromium ions form the Cr3+ centres in octahedral positions of
La3Ga5Ge(Si)O14:Cr unit cell. Magnetic spectra of such centres have an
axial symmetry and magnetic multiplicity equal to 1. As have been
established, complex unresolved structure of EPR-spectra lines for the
Cr3+ ions in La3Ga5Ge(Si)O14:Cr is due to the substitutional desodering
in second cation coordinative sphere. Observed EPR-spectra lines of Cr3+
ions in crystals with the trigonal Ca-gallogermanate structure have been
described by the spin-Hamiltonian of the rhombic symmetry for the spin
meaning equal 3/2. Its parameters and their scattering have been
determined. Angular dependencies of the EPR-spectra lines positions and
spliting of spin-energy levels in Zeeman magnetic field for different
sample orientation have been calcullated.

As was established by the methods of optical and EPR spectroscopy,
manganese ions can belong to the unit cell of the Ca- and Sr-
gallogermanates as three-valence ion and as two-valence ion in
1a-position. Correlation Mn2+/Mn3+ is one oder higher for
Sr3Ga2Ge4O14:Mn. High-temperature annealing (T=1000 K) in vacuum leads
to the reducing of some Mn3+ ions to Mn2+ and next annealing in oxygen
atmospher leads to reverse charge. The spin-Hamiltonian parameters and
their scattering have been determined that describe EPR spectrum of Mn2+
(g =1.9983, A =(8.39±0.05) 10-3 nm-1,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0.045 ± 0.006 nm-1).

In the Ca3Ga2Ge4O14 crystals irradiated at 300 K the additional optical
absorption spectrum have been registered that contains four absorption
bands with maxima at 275, 330, 375 and 500 nm. At the same time the EPR
spectrum is observed to consists of the six lines with DHpp = 23 Oe
width. The investigation of mechanism of accumulation and relaxation of
color centres shows that their number depends nonlinearly on the
radiation dose and is saturated in time. The heating of irradiated
samples up to 380 K leads to disappearance of the EPR spectrum and 330
nm optical absorption band and also causes more distinct 275, 375 and
500 nm bands. Further thermal discoloration leads to synchronous
reduction of the intensity of these bands till to a complete recovery of
the initial absorption spectra. The study of angular dependence of the
EPR spectrum in the (0001), (1210) and (1010) planes shows this spectrum
to correspond to centers of the triclinic symmetry at six
crystallographically equivalent sites , each of lowest symmetry (C1).
The observed EPR spectrum can be described by the spin-Hamiltonian (with
S=1/2) having rhombic symmetry assuming the anisotropic Zeeman
interaction. From the g values measured at various orientations the
principal values and directions of the g-tensor were determined by
diagonalization: gz=2.00290.0005, q=72.3o , j=4.8o;
gx=2.01800.001, q=72.3o, j=94.8o; gy=2.01340.001, q=17.7o,
j=4.8o (the orientation of the x,y,z axes are given with respect to
the [0001], [1210] direction, respectively). We suggest that optical
absorption band with the maximum at 330 nm and EPR spectrum are related
the O—centres in 6g-general positions stabilized by nearest-neighboor
Ge4+ vacancy in 2d- cations positions. Such centres are forming in
UV-irradiated Ca3Ga2Ge4O14:Cr, CaxSr3-xGa2Ge4O14, CaxSr3-xGa2Ge4O14:Cr
(x=1, 1.5, 2) crystals.

Key words: Electron paramagnetic resonance, optical spectroscopy,
crystals with trigonal Ca- gallogermanate structure, impurity ion,
paramagnetic centre, spin-Hamiltonian.

I?aeienaii aei ae?oeo 25.02.99. Oi?iao 60o84/16

Oiiai. ae?oe. a?e. 1,16. Iaeeaae 100 i?ei??iee?a.

Ae?oe OcIA «?ioaeaeo iethn»

i.Euea?a, aoe. Einothoea, 16

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