Structure and phase transitions in 0.5(Ba0.7Ca0.3TiO3)-0.5(BaZr0.2Ti0.8O3) from -100 °C to 150 °C

被引：139

作者：

Haugen, Astri Bjornetun ^{[2
]}

Forrester, Jennifer S. ^{[1
]}

Damjanovic, Dragan ^{[3
]}

Li, Binzhi ^{[4
]}

Bowman, Keith J. ^{[5
]}

Jones, Jacob L. ^{[1
]}

机构：

[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

[2] Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway

[3] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland

[4] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

[5] IIT, Armour Coll Engn, Chicago, IL 60616 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 01期

基金：

美国国家科学基金会;

关键词：

POWDER; BEHAVIOR; MOTION;

D O I：

10.1063/1.4772741

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The solid solution of (x)Ba0.7Ca0.3TiO3-(1-x)BaZr0.2Ti0.8O3 is known to exhibit high piezoelectric constants. Discrepancies in the reported phase transitions and structure around room temperature, however, have complicated the understanding of the enhanced properties. Rietveld refinement of high-resolution X-ray diffraction is employed here to establish and refine the crystallographic structure at temperatures from -100 degrees C to 150 degrees C for x = 0.5. A combination of rhombohedral R3m and tetragonal P4mm is found to coexist at temperatures of 20 degrees C and -25 degrees C, bordered by single phase rhombohedral and tetragonal regions at lower (i.e., -100 degrees C) and higher (i.e., 70 degrees C) temperatures, respectively. The diffractograms also show signs of strain and domain wall scattering that are linked to the sample history. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4772741]

引用

页数：5

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