Raman spectra of olivine solid solutions (FexMg1-x )2SiO4 and spin-vibration interaction

被引：9
|
作者：
Gaisler, S. V. [1 ]
Kolesov, B. A.
机构：
[1] Novosibirsk State Univ, Novosibirsk 630090, Russia
[2] Russian Acad Sci, Siberian Div, AV Nikokaev Inst Inorgan Chem, Novosibirsk, Russia
来源：
JOURNAL OF STRUCTURAL CHEMISTRY | 2007年 / 48卷 / 01期
关键词：
Raman spectroscopy; solid solutions; spin-vibration interaction; percolation threshold;
D O I：
10.1007/s10947-007-0009-9
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Room temperature Raman spectra of synthesized powder (FexMg1-x )(2)SiO4 solid solutions are obtained. Frequency trend of all modes versus composition shows clearly the existence of a step at x = 0.3. A step-like behavior of vibration frequencies at the given composition that coincides with the percolation threshold for the olivine lattice is related to the appearance of magnetic excitations in the disordered magnetic medium owing to the spin-vibration interaction.
引用
收藏
页码：61 / 65
页数：5
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