Journal of Inorganic Materials

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Differential Hysteresis loop of Ferroelectrics and Polarization Fatigue

CHEN Min1, ZHU Gui-Wen2, ZHOU Wei-Hua3, SHEN Han1, LI Jing-De1   

  1. 1. School of Physics Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China; 2. Department of Physics, Guangdong College of Pharmacy, Guangzhou 510224, China; 3. Department of Physics, Yi Chun College, Yichun 336000, China
  • Received:2006-05-25 Revised:2006-08-08 Published:2007-05-20 Online:2007-05-20

Abstract:

By means of ferroelectric differential hysteresis loop spectra, the polarization fatigue of Ba 0.99 Sr 0.01 TiO3 ceramics was carefully studied. The effects of conductance, paraelectrics and pure ferroelectrics could be definitely separated. The results show that the polarization fatigue arose from 180° domain appears much faster than that arose from 90° domain. Ferroelectric differential loop spectra are proved to be a much more powerful method to describe polarization fatigue than traditional hysteresis loop.

Key words: ferroelectricity, fatigue, differential hysteresis loop, BST

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