Investigation of orthorhombic-tetragonal structural crossover in (Ba0.92Ca0.08)(Zr0.05Ti0.95)O3

被引：3

作者：

Singh, G. ^{[1
]}

Upadhaya, A. ^{[2
]}

Sinha, A. K. ^{[2
]}

Tiwari, V. S. ^{[1
]}

机构：

[1] Raja Ramanna Ctr Adv Technol, Laser Mat Dev & Devices Div, Indore 452013, Madhya Pradesh, India

[2] Raja Ramanna Ctr Adv Technol, Indus Synchrotron Utilizat Div, Indore 452013, Madhya Pradesh, India

来源：

JOURNAL OF APPLIED CRYSTALLOGRAPHY | 2014年 / 47卷

关键词：

FERROELECTRIC PROPERTIES; PHASE;

D O I：

10.1107/S1600576714017804

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The orthorhombic to tetragonal phase transition in (Ba0.92Ca0.08)(Zr0.05Ti0.95)O-3 was investigated using high-temperature X-ray diffraction between 260 and 333 K. The results established the presence of tetragonal (P4mm) and orthorhombic (Amm2) phase co-existence in the temperature range of 293 <= T <= 313 K. The tetragonal phase was found to increase from 27% at 293 K to 76% at 313 K. The structural refinement and line-profile analysis ruled out the presence of an intermediate monoclinic structure during P4mm -> Amm2 crossover. The analysis shows a pure orthorhombic (Amm2) structure for T < 293 K and tetragonal for T > 313K. (C) 2014 International Union of Crystallography

引用

页码：1647 / 1650

页数：4

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