On the symmetry of the morphotropic phase boundary in ferroelectric BiScO3-PbTiO3 system

被引:28
作者
Datta, K. [1 ]
Gorfman, S. [1 ]
Thomas, P. A. [1 ]
机构
[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
基金
英国工程与自然科学研究理事会;
关键词
Bismuth compounds - Lead titanate - Titanium compounds;
D O I
10.1063/1.3268478
中图分类号
O59 [应用物理学];
学科分类号
摘要
A single crystal of (1-x) BiScO3-xPbTiO(3) at x=0.64, which is the morphotropic phase boundary composition for this system, has been investigated utilizing two different types of diffractometry. A total of twenty different reciprocal space maps for different Bragg reflections {hkl} were collected to study their individual splittings. It has been shown that to explain the 2 theta splittings observed, a two-phase model is necessary. The best model found consists of either two primitive orthorhombic or two primitive monoclinic lattices and the models previously proposed based on powder diffraction data, consisting rhombohedral or tetragonal symmetries, can be rejected. (C) 2009 American Institute of Physics. [doi:10.1063/1.3268478]
引用
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页数:3
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