The absorption and circular dichroism spectra of langasite family crystals doped with chromium ions

被引：15

作者：

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

Konstantinova, A. F. ^{[2
]}

Mill, B. V. ^{[3
]}

Veremeichik, T. F. ^{[2
]}

Pyrkov, Yu. N. ^{[4
]}

Orekhova, V. P. ^{[2
]}

Fedotov, E. V. ^{[1
]}

机构：

[1] Moscow Phys Tech Inst, Moscow, Russia

[2] Russian Acad Sci, AV Shubnikov Crystallog Inst, Moscow 119333, Russia

[3] Moscow MV Lomonosov State Univ, Moscow, Russia

[4] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia

来源：

CRYSTALLOGRAPHY REPORTS | 2009年 / 54卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

GALLOGERMANATE; SPECTROSCOPY; CALCIUM; LASER;

D O I：

10.1134/S1063774509040129

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The absorption and circular dichroism spectra of langasite family crystals, La3Ga5SiO14, La3Ga5GeO14, Ca3Ga2Ge4O14, Sr3Ga2Ge4O14 (red), Sr3Ga2Ge4O14 (green), La3Ta0.5Ga5.5O14, and La3Nb0.5Ga5.5O14, which were doped with chromium ions, have been investigated in the range of 240-850 nm. It is shown that chromium ions are incorporated into the structure of the investigated crystals both in the octahedrally (Cr3+ ion in 1a octahedron) and tetrahedrally (Cr4+ ion in 2d tetrahedron) coordinated positions. The ion ratio Cr3+/Cr4+ changes in a wide range in the crystals studied.

引用

页码：613 / 618

页数：6

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