Bi2ZnTiO6:: A lead-free closed-shell polar perovskite with a calculated ionic polarization of 150 μC cm-2

被引：178

作者：

Suchomel, Matthew R. ^{[1
]}

Fogg, Andrew M. ^{[1
]}

Allix, Mathieu ^{[1
]}

Niu, Hongjun ^{[1
]}

Claridge, John B. ^{[1
]}

Rosseinsky, Matthew J. ^{[1
]}

机构：

[1] Univ Liverpool, Dept Chem, Liverpool L69 7ZD, Merseyside, England

来源：

CHEMISTRY OF MATERIALS | 2006年 / 18卷 / 21期

关键词：

D O I：

10.1021/cm061085r

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The synthesis and characterization of the highly tetragonal Bi2 ZnTiO6 perovskite, a new Pb-free polar compound with a calculated ionic polarization of over 150 μC cm-2, were investigated. The reaction of the component oxides for the composition at 900°C and 6GPa for 1 hour with a cylindrical graphite furnace in a Walker-type multianvil press provided a single phase perovskite product which is stable under ambient pressures. The detailed analysis of the structure of Bi2 ZnTiO 6 suggests that the material has a much larger polarization than PbTiO3. The extent of the distortion giving rise to pyroelectricity was revealed by the difference in size between the c and a axes of the tetragonal perovskite structure in PbTiO3. Such a phenomena motivated both the growth of new materials in thin film form and the search for new electroceramic oxides based on the electronic structure of the cations.

引用

页码：4987 / 4989

页数：3

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