SPECTROSCOPY OF CR3+ AND CR4+ IONS IN FORSTERITE

被引：144

作者：

JIA, WY ^{[1
]}

LIU, HM ^{[1
]}

JAFFE, S ^{[1
]}

YEN, WM ^{[1
]}

DENKER, B ^{[1
]}

机构：

[1] ACAD SCI USSR, INST GEN PHYS, MOSCOW 117924, USSR

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.43.5234

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fluorescence and site-selective excitation spectra of chromium-activated forsterite at 10 K are reported. It is found that a high-field Cr3+ site in inversion symmetry emits sharp R1 line fluorescence, while a low field Cr3+ site in mirror symmetry produces 4T2 broadband emission. The dominant absorption in the visible is shown to be the 3A2 --> 3T1(3F) transitions of Cr4+ in tetrahedral sites. In the near-infrared region, three sharp lines from Cr4+ were observed and are assigned to the transition from the 3A1(3T2) spin triplet to the 3A2 ground state. The energy-level splittings of Cr4+ due to an orthorhombic-distorted field with spin-orbit coupling are discussed.

引用

页码：5234 / 5242

页数：9

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