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应用科学学报 ›› 2003, Vol. 21 ›› Issue (2): 173-176.

• 论文 • 上一篇    下一篇

铁电开关的尺寸效应

徐荣青1, 周青春2, 王茂祥3   

  1. 1 华东船舶工业学院信息与电子系 江苏 镇江 212003;
    2 华东船舶工业学院基础学科系 江苏 镇江 212003;
    3 东南大学固体电子学系 江苏 南京 210096
  • 收稿日期:2002-01-02 修回日期:2002-04-16 出版日期:2003-06-10 发布日期:2003-06-10
  • 作者简介:徐荣青(1966-),男,江苏邢江人,博士生.

Size Effect in Ferroelectric Switching

XU Rong-qing1, ZHOU Qing-chun2, WANG Mao-xiang3   

  1. 1 Department of Information and Electronics, East China Shipbuilding Institute, Zhenjiang 212003, China;
    2 Department of Basic Courses, East China Shipbuilding Institute, Zhenjiang 212003, China;
    3 Department of Electronic Engineering, Southeast University, Nanjing 210096, China
  • Received:2002-01-02 Revised:2002-04-16 Online:2003-06-10 Published:2003-06-10

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摘要： 将Orihara-ishibashi铁电体统计理论用于三维立方铁电体,求出立方铁电畴反转过程中的反转体积比Q(t)和与开关电流相关的反转速率dQ/dt的表达式,并对不同系统尺寸作了数值计算.结果表明,开关电流随系统尺寸l变小而下降,在一定尺寸范围内(l<0.75),开关时间也随l减小而下降。

关键词: 开关电流, 畴, 铁电体

Abstract: The Orihara-Ishibashi theory of finite ferroelectric system is applied to the cubic ferro-electrics. The expressions of the ratio of the reversed domain volume to the system volume Q(t) and the reversal rate dQ/dt which is closely related to the switching current, are given for cubic domain reversals. Computations indicate that the switching current drops with the size of the ferroelectric system, and in a certain range of l(l<0. 75), the switching time also decreases with l.

Key words: ferroelectrics, switching current, domain

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