OPTICAL-ABSORPTION OF TL+ IONS IN KMGF3 CRYSTALS

被引：14

作者：

SCACCO, A

FIORAVANTI, S

MISSORI, M

GRASSANO, UM

LUCI, A

PALUMMO, M

GIOVENALE, E

ZEMA, N

机构：

[1] UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY

[2] ENEA,DIPARTIMENTO TECNOL PUNTA,I-00044 FRASCATI,ITALY

[3] CNR,IST STRUTT MAT,I-00044 FRASCATI,ITALY

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1993年 / 54卷 / 09期

关键词：

OPTICAL ABSORPTION; TL+ IONS; FLUOROPEROVSKITES; KMGF3;

D O I：

10.1016/0022-3697(93)90010-O

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Absorption spectra of Tl+-doped KMgF3 single crystals have been measured at various temperatures between 9 and 300 K in the V.u.v. region. Three main bands are found, and they are labelled A, B, C in order of increasing energy because of their close similarities to those of Tl+ ions in alkali halides. The most striking novelty in KMgF3:Tl+ is given by the clearly resolved structures of the A and C bands, which both exhibit three components at all temperatures. These structures are related to the Jahn-Teller splitting, due to the interaction of the impurity ion with non-cubic lattice vibrations, and to a static distortion of the host lattice.

引用

页码：1035 / 1041

页数：7

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