Phase transitions and dielectric properties in Bi(Zn1/2Ti1/2)O3-BaTiO3 perovskite solid solutions

被引：143

作者：

Huang, Chien-Chih ^{[1
]}

Cann, David P. ^{[1
]}

机构：

[1] Oregon State Univ, Dept Mech Engn, Corvallis, OR 97331 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 02期

关键词：

(1-x) Bi (Zn1/2Ti1/2)O3-xBaTiO3 polycrystalline ceramics were obtained via solid state processing techniques. The perovskite structure was found to be stable for compositions containing x=0.66 or greater. Based on x-ray diffraction data; a morphotropic phase boundary between tetragonal and rhombohedral perovskite phases was observed at x0.9. For compositions rich in BaTiO3; the symmetry of the perovskite phase was tetragonal but with increased Bi (Zn1/2Ti 1/2)O3 content; the rhombohedral phase appeared. Dielectric characterization revealed that as Bi (Zn1/2Ti 1/2)O3 content increased; the transition temperature decreased and the transition peak became very diffused. A comparison of the dielectric behavior with other Bi(Zn1/2Ti1/2)O3 -based solid solutions is also discussed. © 2008 American Institute of Physics;

D O I：

10.1063/1.2960469

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

(1-x)Bi(Zn1/2Ti1/2)O-3-xBaTiO(3) polycrystalline ceramics were obtained via solid state processing techniques. The perovskite structure was found to be stable for compositions containing x=0.66 or greater. Based on x-ray diffraction data, a morphotropic phase boundary between tetragonal and rhombohedral perovskite phases was observed at x approximate to 0.9. For compositions rich in BaTiO3, the symmetry of the perovskite phase was tetragonal but with increased Bi(Zn1/2Ti1/2)O-3 content, the rhombohedral phase appeared. Dielectric characterization revealed that as Bi(Zn1/2Ti1/2)O-3 content increased, the transition temperature decreased and the transition peak became very diffused. A comparison of the dielectric behavior with other Bi(Zn1/2Ti1/2)O-3-based solid solutions is also discussed. (c) 2008 American Institute of Physics.

引用

页数：4

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