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PbZr_（0.3）Ti_（0.7）O_3/PbTiO_3超晶格的热释电性研究
  • ISSN号：1674-1056
  • 期刊名称：《中国物理B：英文版》
  • 时间：0
  • 分类：O469[理学—凝聚态物理;理学—电子物理学;理学—物理]
  • 作者机构：[1]苏州大学物理科学与技术学院,江苏苏州215006
  • 相关基金：国家自然科学基金（50832002,10904101）; 江苏省高校自然科学基金（08KJB140006）
作者： 陈加文[1], 戴大鹏[1], 曹海霞[1]
关键词： 热释电系数, 超晶格, 朗道-金兹堡格-德文希尔理论, pyroelectric cofficient, superlattices, Landau-Ginzburg-Devonshire theory
中文摘要：

基于朗道-金兹堡格-德文希尔（Landau-Ginzburg-Devonshire）热力学理论,我们研究了由PbZr0.3Ti0.7O3（PZT）与PbTiO3（PT）两种组份组成的超晶格的热释电性,并且考虑了两组份之间的失配应变的影响.我们探讨了界面耦合强度、组分厚度比例以及失配应变等对超晶格的极化强度和热释电性的影响.计算结果表明,这种铁电超晶格材料具有巨大的热释电系数.因此,我们可以通过调节界面耦合强度、组份比例等方法达到调控热释电性的目的,为实验和应用研究提供一个可靠而有效的方法.

英文摘要：

Based on the Landau-Ginzburg-Devonshire theory,the pyroelectric effect of ferroelectric superlattices PbZr0.3Ti0.7O3/PbTiO3 has been investigated,in which the misfit strain between the two slabs is taken into account.The impact of interfacial coupling strength,composition concentration proportion of PbZr0.3Ti0.7O3 slab in one period on the pyroelectric coefficient has been calculated.It is found that the ferroelectric superlattice displays pronounced pyroelectric effect.Essentially,the ferroelectric superlattices provide an effective means to acquire good pyroelectric effect by adjusting the interfacial coupling strength,as well as compositional thickness concentration.

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期刊信息
  • 《中国物理B：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会和中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京 中关村 中国科学院物理研究所内
  • 邮编：100080
  • 邮箱：
  • 电话：010-82649026 82649519
  • 国际标准刊号：ISSN：1674-1056
  • 国内统一刊号：ISSN：11-5639/O4
  • 邮发代号:
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  • 被引量:406