Optical spectroscopy of a La3Ga5SiO14:Co2+ crystal

被引：8

作者：

Burkov, V. I. ^{[1
]}

Alyabyeva, L. N. ^{[1
]}

Denisov, Yu. V. ^{[1
]}

Mill', B. V. ^{[2
]}

机构：

[1] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Oblast, Russia

[2] Moscow MV Lomonosov State Univ, Moscow 119899, Russia

来源：

INORGANIC MATERIALS | 2014年 / 50卷 / 11期

关键词：

FIELD SPECTRA; D3,7 IONS; CO2+; ABSORPTION; LUMINESCENCE;

D O I：

10.1134/S0020168514110041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The absorption, luminescence, and circular dichroism spectra of a cobalt-doped La3Ga5SiO14 crystal (Ca3Ga2Ge4O14 structure, sp. gr. P321) have been studied in the range 8-300 K. The Co2+ ion has been shown to occupy the 3f tetrahedral site. For T < 220 K, the (2) E((2) G) -> (4) A (2) and (4) T (1)((4) P) -> (4) A (2) transitions of the tetrahedrally coordinated Co2+ ion are active in the luminescence spectrum. For T > 220 K, the (2) E((2) G) state is completely quenched, and only luminescence from the (4) T (1)((4) P) level is observed.

引用

页码：1119 / 1124

页数：6

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