Dielectric and Electrical Transport Properties of the Fe~(3+)-doped CaCu_3Ti_4O_(12)
查看参考文献19篇
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文摘
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CaCu_(3-x)Fe_xTi_4O_(12) (x=0, 0.015, 0.03, 0.045, 0.06) ceramics were synthesized by sol-gel method. The electrical conduction and dielectric measurements show that the doping of a very small amount of Fe~(3+) ions greatly reduces the low-frequency dielectric constants and leakage, and enhances grain resistivity. For the doped samples, the appearance of the strong low-frequency peaks in the spectra of dielectric loss confirms that the doping of Fe~(3+) ions induces the contact-electrode effect on ceramic surface. These great changes of electrical properties may originate from the reduced amount of oxygen vacancies by doping Fe~(3+). |
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来源
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Journal of Materials Science & Technology
,2012,28(12):1145-1150 【核心库】
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DOI
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10.1016/s1005-0302(12)60184-4
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关键词
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Ceramics
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dc electric current
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Dielectric properties
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Doping
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地址
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1.
School of Physics and Technology, Wuhan University, Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan, 430072
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Institution of Sensors and Intelligent System and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074
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School of Physics and Technology, Wuhan University, Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education;;Key Laboratory for the Green Preparation and Application of Functional Materials of Ministry of Education, Wuhan, 430072
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语种
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英文 |
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ISSN
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1005-0302 |
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学科
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化学工业 |
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基金
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Huazhong University of Science and Technology, China
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国家自然科学基金
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文献收藏号
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CSCD:4727797
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