非理想表面层对一级相变铁电薄膜性质的影响

非理想表面层对一级相变铁电薄膜性质的影响

师尚贵¹, 林珊²

1. 大庆师范学院物理系，大庆 163712; 吉林大学物理学院，长春 130023

收稿日期:2004-06-01 修回日期:1900-01-01 出版日期:2004-07-26 发布日期:2004-07-26
通讯作者: 师尚贵

Influence of imperfect surface layers on properties of first-order phase transition ferroelectric thin films

SHI Shang-gui¹, LIN Shan²

1. Department of Physics, Daqing Normal College, Daqing 163712, China; 2. College of Physics, Jilin University, Changchun 130023, China

Received:2004-06-01 Revised:1900-01-01 Online:2004-07-26 Published:2004-07-26
Contact: SHI Shang-gui

摘要/Abstract

摘要： 应用Ginzburg-Landau-Devonshire(GLD) 理论研究了非理想表面对夹持在两个金属电极间的一级铁电薄膜性质的影响. 结果表明，非理想表面层的存在降低了一级铁电薄膜的铁电相变转变温度，当两个表面层不对称时，铁电薄膜的电滞回线失去了中心对称性.

关键词: 一级相变, 铁电薄膜, GLD理论, 电滞回线

Abstract: With the help of Ginzburg-Landau-Devonshire (GLD) theory, the influence of imperfect surface layers on the properties of first-order ferroelectric thin films intercalated between two metal electrodes is theoretically studied. The results show that the imperfect surface layer of ferroelectric thin films lowers the phase transition temperature. When the imperfect surface layers are asymmetric, the hysteresis hoop of the ferroelectric thin film loses its center symmetry.

Key words: first-order phase transition, ferroelectric thin film, GLD theory, hysteresis hoop

中图分类号:

O484

师尚贵, 林珊. 非理想表面层对一级相变铁电薄膜性质的影响[J]. J4, 2004, 42(03): 424-426.

SHI Shang-gui, LIN Shan. Influence of imperfect surface layers on properties of first-order phase transition ferroelectric thin films[J]. J4, 2004, 42(03): 424-426.

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[2]	张芹　郑植仁. 双层铁电薄膜性质的研究[J]. J4, 2002, 40(04): 392-394.