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近化学计量比钽酸锂畴反转特性研究
引用本文:贾宝申,赵业权,张学锋,申岩,何焰蓝.近化学计量比钽酸锂畴反转特性研究[J].物理学报,2008,57(9):5670-5674.
作者姓名:贾宝申  赵业权  张学锋  申岩  何焰蓝
作者单位:(1)国防科技大学物理系,长沙 410073; (2)哈尔滨工业大学航天学院,哈尔滨 150001
基金项目:中国物理研究院科研项目
摘    要:采用助熔剂提拉法生长了非掺杂及掺镁近化学剂量比钽酸锂晶体.氢氟酸腐蚀晶片的金相显微镜观察结果显示,化学剂量比钽酸锂的畴结构为六边形.利用自行研制的极化设备对晶体进行极化实验,采用外加短脉冲极化电场,测定了近化学计量比钽酸锂单晶的畴反转特性,得到了完全反转的畴结构. 关键词: 近化学剂量比钽酸锂 畴结构 矫顽场 极化电流

关 键 词:近化学剂量比钽酸锂  畴结构  矫顽场  极化电流
收稿时间:2007-09-11
修稿时间:3/7/2008 12:00:00 AM

Domain structure inversion characterization of near stoichiometric lithium tantalate
Jia Bao-Shen,Zhao Ye-Quan,Zhang Xue-Feng,Shen Yan,He Yan-Lan.Domain structure inversion characterization of near stoichiometric lithium tantalate[J].Acta Physica Sinica,2008,57(9):5670-5674.
Authors:Jia Bao-Shen  Zhao Ye-Quan  Zhang Xue-Feng  Shen Yan  He Yan-Lan
Abstract:Pure and MgO doped near stoichiometric lithium tantalate has been grown by adding flux method. The observation of the crystal wafers etched by hydrofluoric acid under metallographic microscope indicate that the domain structure of near stoichiometric lithium tantalate is hexagonal. Polarization experiments have been done by using the equipment made by ourselves. By using short-impulsed polarization electric field, several parameters, including the positive and negative direction coercive force field and polarization time were investigated. Polarization current and entirely reversed domain structure were obtained.
Keywords:near stoichiometric lithium tantalate  domain structure  coercive force field  polarization current
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