| Dielectric and Ferroelectric Properties of Complex Perovskite Ceramics Under Compressive Stress |
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| 引用本文： | R. Yimnirun N. Triamnak M. Unruan, S. Wongsaenmai A. Ngamjarurojana Y. Laosiritaworn S. Ananta. Dielectric and Ferroelectric Properties of Complex Perovskite Ceramics Under Compressive Stress[J]. 材料科学与工程学报, 2007, 25(6): 833-836,849 |
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| 作者姓名： | R. Yimnirun N. Triamnak M. Unruan S. Wongsaenmai A. Ngamjarurojana Y. Laosiritaworn S. Ananta |
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| 作者单位： | R. Yimnirun（Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand） N. Triamnak（Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand） M. Unruan, S. Wongsaenmai（Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand） A. Ngamjarurojana（Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand） Y. Laosiritaworn（Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand） S. Ananta（Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand） |
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| 基金项目： | Acknowledgments Financial supports from the Thailand Research Fund （TRF）, Commission on Higher Education （CHE）, Faculty of Science and Graduate School of Chiang Mai University are gratefully acknowledged. |
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| 摘 要： |
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| 关 键 词： | 铁电性能 介电性能 钙钛矿陶瓷 压力 |
| 文章编号： | 1673-2812（2007）06-0833-05 |
| 收稿时间： | 2006-05-01 |
| 修稿时间： | 2007-07-10 |
Dielectric and Ferroelectric Properties of Complex Perovskite Ceramics Under Compressive Stress |
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| R. Yimnirun,N. Triamnak,M. Unruan, S. Wongsaenmai,A. Ngamjarurojana,Y. Laosiritaworn,S. Ananta. Dielectric and Ferroelectric Properties of Complex Perovskite Ceramics Under Compressive Stress[J]. Journal of Materials Science and Engineering, 2007, 25(6): 833-836,849 |
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| Authors: | R. Yimnirun N. Triamnak M. Unruan S. Wongsaenmai A. Ngamjarurojana Y. Laosiritaworn S. Ananta |
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| Abstract: | Dielectric and ferroelectric properties of complex perovskite PZT-PZN ceramic system were investigated under the influence of the compressive stress. The results showed that the dielectric properties, i.e. dielectric constant ( εr ) and dielectric loss ( tan δ), and the ferroelectric characteristics, i.e. the area of the ferroelectric hysteresis loops, the saturation polarization ( P(sat) ), and the remnant polarization (Pr) changed significantly with increasing compressive stress. These changes depended strongly on the ceramic compositions. The experimental results on the dielectric properties could be explained by both intrinsic and extrinsic domain-related mechanisms involving domain wall motions, as well as the de-aging phenomenon. The stress-induced domain wall motion suppression and non-180° ferroelectric domain switching processes were responsible for the changes observed in the ferroelectric parameters. In addition,a significant decrease in those parameters after a cycle of stress was observed and attributed to the stress induced decrease in switchable part of spontaneous polarization. This study clearly show that the applied stress had significant influence on the electrical properties of complex perovskite ceramics. |
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| Keywords: | dielectric properties ferroelectric properties stress perovskite ceramics |
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