X-RAY STUDIES OF PBTIO3 UNDER HYDROSTATIC-PRESSURE

被引：7
作者：
RAMIREZ, R
VINCENT, H
NELMES, RJ
KATRUSIAK, A
机构：
[1] CNRS,F-38042 GRENOBLE,FRANCE
[2] UNIV EDINBURGH,DEPT PHYS,EDINBURGH EH9 3JZ,MIDLOTHIAN,SCOTLAND
[3] ADAM MICKIEWICZ UNIV,PL-61712 POZNAN,POLAND
来源：
SOLID STATE COMMUNICATIONS | 1991年 / 77卷 / 12期
关键词：
D O I：
10.1016/0038-1098(91)90348-Y
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The crystal structure of tetragonal PbTiO3 has been determined by X-ray diffraction techniques up to a pressure of 4.5 GPa at room temperature. Considering the spontaneous polarization to be proportional to the atomic displacements, we find that its dependence on pressure is proportional to that of the spontaneous strain z1/2 = (c/a - 1)1/2, our results confirm an anomaly in the behaviour of the spontaneous polarization, at congruent-to 1.3 GPa, similar to what has been reported for the spontaneous strain.
引用
收藏
页码：927 / 929
页数：3
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