FERROELASTIC TRANSITION IN SOME SCHEELITE-TYPE CRYSTALS.

被引：0
|
作者：
Ishibashi, Yoshihiro [1 ]
Hara, Kazuhiro [1 ]
Sawada, Akitatsu [1 ]
机构：
[1] Nagoya Univ, Nagoya, Jpn, Nagoya Univ, Nagoya, Jpn
来源：
Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics | 1987年 / 150卷 / 1-2期
关键词：
LIGHT - Brillouin Scattering - PHONONS - RAMAN SCATTERING;
D O I：
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中图分类号：
学科分类号：
摘要：
The experimental results of the Brillouin scattering in several scheelite-type crystals are briefly reviewed. The high pressure Raman scattering studies of LaNbO//4 and NdNbO//4 crystals were recently carried out and have revealed that the behavior of their lowest frequency optical modes is quite different from the one reported for BiVO//4. A lattice model for the ferroelastic transition from a tetragonal phase is presented and discussed.
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页码：258 / 264
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