The tetragonal phase of Na0.5Bi0.5TiO3 -: a new variant of the perovskite structure

被引：217

作者：

Jones, GO ^{[1
]}

Thomas, PA ^{[1
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

来源：

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE | 2000年 / 56卷

关键词：

D O I：

10.1107/S0108768100001166

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The structure of the tetragonal phase of the A-site-substituted perovskite sodium bismuth titanate, Na0.5Bi0.5TiO3, has been determined by neutron powder diffraction at 698 K. The structure was refined in space group P4bm with a (= b) = 5.5191 (1), c = 3.9085 (1) Angstrom, V = 119.055 (5) Angstrom(3), Z = 2 and D-x = 5.91 Mg m(-3). The structure exhibits an unusual combination of in-phase (a(0)a(0)c(+)) tilts and antiparallel cation displacements along the polar c axis, which results in a new variant of the perovskite structure.

引用

页码：426 / 430

页数：5

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