RESONANCE RAMAN-SCATTERING IN CR4+-DOPED FORSTERITE

被引：13

作者：

CALISTRU, DM ^{[1
]}

WANG, WB ^{[1
]}

PETRICEVIC, V ^{[1
]}

ALFANO, RR ^{[1
]}

机构：

[1] CUNY GRAD SCH & UNIV CTR,NEW YORK,NY 10031

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.51.14980

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Seven Cr4+ vibronic modes were obtained by means of resonance Raman scattering. These modes were measured at 253, 290, 480, 498, 690, 740, and 764 cm-1 in Cr4+:Mg2SiO4. The symmetry of each of the modes was established and correlated to the molecular symmetry (Td). The effective elastic constants for the Si-O and Cr4+-O bonds were estimated where a decrease of 13 to 29% (model dependent) was found when Cr4+ substitutes for Si. Possible energy matching between vibronic and host phonon modes are suggested as nonradiative pathway. © 1995 The American Physical Society.

引用

页码：14980 / 14986

页数：7

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