Phase Transitions Induced by Hydrostatic Pressure in II-III2-VI4 Compounds

被引：0

作者：

Ursaki, Veacheslav V. ^{[1
]}

Burlakov, Igor I. ^{[1
]}

Tiginyanu, Ivan M. ^{[1
,2
]}

Raptis, Yannis S. ^{[3
]}

Anastassakis, Evangelos ^{[3
]}

Anedda, Alberto ^{[4
]}

Corpino, Riccardo ^{[4
]}

机构：

[1] Moldavian Acad Sci, Inst Appl Phys, Kishinev 2028, Moldova

[2] Tech Univ Moldova, Kishinev 2004, Moldova

[3] Natl Tech Univ Athens, Dept Phys, Athens 15780, Greece

[4] Univ Cagliari, Dept Phys, INFM, I-09042 Monserrato, CA, Italy

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2000年 / 39卷 / 01期

关键词：

Order-disorder phase transition; RS under hydrostatic piessure;

D O I：

10.7567/JJAPS.39S1.143

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

II-III2-VI4 compounds with different crystal structures have been studied by Raman spectroscopy (RS) under hydrostatic pressure up to 30 GPa. The phase transition characteristics induced by hydrostatic pressure i.e. the path of the phase transformation, the pressure value of phase transition and the structure of the high pressure phase, were found to depend on the initial crystal lattice parameters such as parameters of cations, tetragonal distortion, bond length and bond ionicity. At high pressures a general property for most of these compounds is the phase transition to the Raman inactive rocksalt-type structure. Another common feature is related to the order-disorder phase transition in the cation sublattice occurring at low and intermediate pressures.

引用

页码：143 / 145

页数：3

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