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压电陶瓷中的空间电荷

李景德; 邓人忠   

  1. 中山大学物理系; 广州510275
  • 收稿日期:1997-03-31 修回日期:1997-05-05 出版日期:1998-04-20 网络出版日期:1998-04-20

Space Charges in Piezoelectric Ceramics

LI Jing-De; DENG Ren-Zhong   

  1. Department of Physics; Zhongshan University Guangzhou 510275 China
  • Received:1997-03-31 Revised:1997-05-05 Published:1998-04-20 Online:1998-04-20

摘要: 用微分时域谱方法,可以将陶瓷的介电、压电和热释电效应中来自铁电极化、异极电荷和同极电荷的贡献分开.对同一样品作介电谱和热释电谱测量,可以区分异极和同极电荷的分量;因为两者的热释电效应反号.

关键词: 压电陶瓷, 热释电, 时域, 空间电荷

Abstract: In dielectric, piezoelectric, and pyroelectric effects, the contributions of ferroelectricity, heteropolax charge, and homopolax charge can be studied sepaxately by using differential time domain spectroscopy method. For a same sample, by measuring the dielectric and pyroelectric spectra,the components of heteropolar and homopolar charges can be separated. In pyroelectric effect, the components of these charges have opposite signs.

Key words: piezoelectric ceramics, pyroelectricity, time domain, space charge

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