Giant dielectric properties of CaCu3Ti4O12 (Li,Ti) -doped NiO composites subjected to postsintering annealing and compressive stress
We report the effects of postsintering annealing in argon and compressive prestress on the giant dielectric properties of CaCu3Ti4O12- Li0.3Ti0.02Ni0.68O composites in the frequency range from 100 Hz to 1 MHz. After postsintering annealing, all compounds investigated still display a Debye-like relax...
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| Main Authors: | , , , |
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| 格式: | 雜誌 |
| 出版: |
2018
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| 主題: | |
| 在線閱讀: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=45149107515&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/60735 |
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| 機構: | Chiang Mai University |
| 總結: | We report the effects of postsintering annealing in argon and compressive prestress on the giant dielectric properties of CaCu3Ti4O12- Li0.3Ti0.02Ni0.68O composites in the frequency range from 100 Hz to 1 MHz. After postsintering annealing, all compounds investigated still display a Debye-like relaxation, which can be interpreted based on the Maxwell-Wagner model. The dielectric behavior and the effect of compressive prestress of CaCu3Ti4O12and CaCu3Ti4O12- Li0.3Ti0.02Ni0.68O after annealing are closely related to the oxygen vacancies in the grain boundaries. © 2008 American Institute of Physics. |
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