Multifold polar states in Zn-doped Sr0.9Ba0.1TiO3 ceramics

doi:10.1088/1674-1056/24/12/127701

中国物理B ›› 2015, Vol. 24 ›› Issue (12): 127701-127701.doi: 10.1088/1674-1056/24/12/127701

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Multifold polar states in Zn-doped Sr_0.9Ba_0.1TiO₃ ceramics

郭艳艳^a, 郭云均^b, 魏通^c, 刘俊明^d

a College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
b School of Physics and Electronic Engineering, Jiangsu Second Normal University, Nanjing 210013, China;
c College of Science, Civil Aviation University of China, Tianjin 300300, China;
d Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China

收稿日期:2015-08-13 修回日期:2015-09-02 出版日期:2015-12-05 发布日期:2015-12-05
通讯作者: Liu Jun-Ming E-mail:liujm@nju.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11304158, 51431006, 51102277, and 11104118), the Scientific Research Foundation of Nanjing University of Posts and Telecommunications, China (Grant No. NY213020), and the Qing Lan Project of Jiangsu Province, China.

Multifold polar states in Zn-doped Sr_0.9Ba_0.1TiO₃ ceramics

Guo Yan-Yan (郭艳艳)^a, Guo Yun-Jun (郭云均)^b, Wei Tong (魏通)^c, Liu Jun-Ming (刘俊明)^d

a College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
b School of Physics and Electronic Engineering, Jiangsu Second Normal University, Nanjing 210013, China;
c College of Science, Civil Aviation University of China, Tianjin 300300, China;
d Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China

Received:2015-08-13 Revised:2015-09-02 Online:2015-12-05 Published:2015-12-05
Contact: Liu Jun-Ming E-mail:liujm@nju.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11304158, 51431006, 51102277, and 11104118), the Scientific Research Foundation of Nanjing University of Posts and Telecommunications, China (Grant No. NY213020), and the Qing Lan Project of Jiangsu Province, China.

摘要/Abstract

摘要：

We investigate the effect of Zn doping on the dielectricity and ferroelectricity of a series of polycrystalline Sr_0.9-xZn_xBa_0.1TiO₃ (0.0% ≤ x ≤ 5.0%) ceramics. It is surprisingly observed that the Zn doping will produce the multifold polar states, i.e., the Zn-doped ceramic will convert a reduced polar state into an enhanced polar state, and eventually into a stabilized polar state with increasing the doping level x. It is revealed that in the background of quantum fluctuations, the competition between the Zn-doping-induced lattice contraction and the Ba-doping-induced lattice expansion is responsible for both the reduced polar state and the enhanced polar state coming into being. Also, the addition of the antiferrodistortive effect, which is the antipolar interaction originating from the opposite tilted-TiO₆ octahedra rotation, represents the core physics behind the stabilized polar state.

关键词: SrTiO₃, ferroelectricity, lattice distortion, off-center dipole moment

Abstract:

Key words: SrTiO₃, ferroelectricity, lattice distortion, off-center dipole moment

中图分类号: (Permittivity (dielectric function))

77.22.Ch

77.80.B- (Phase transitions and Curie point) 77.84.Cg (PZT ceramics and other titanates)

郭艳艳, 郭云均, 魏通, 刘俊明. Multifold polar states in Zn-doped Sr_0.9Ba_0.1TiO₃ ceramics[J]. 中国物理B, 2015, 24(12): 127701-127701.

Guo Yan-Yan (郭艳艳), Guo Yun-Jun (郭云均), Wei Tong (魏通), Liu Jun-Ming (刘俊明). Multifold polar states in Zn-doped Sr_0.9Ba_0.1TiO₃ ceramics[J]. Chin. Phys. B, 2015, 24(12): 127701-127701.

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Multifold polar states in Zn-doped Sr_0.9Ba_0.1TiO₃ ceramics

Multifold polar states in Zn-doped Sr_0.9Ba_0.1TiO₃ ceramics

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