期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 96, 期 11, 页码 3489-3493出版社
WILEY
DOI: 10.1111/jace.12514
关键词
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资金
- Natural Science Foundation of Guangxi [2013GXNSFAA019291, 2012GXNSFDA053024]
- Natural Science Foundation of China [51102058, 21261007, 21061004]
- Guilin University of Technology [002401003282]
- Department of Science and Technology of Guangxi [11107006-42]
- Department of Science and Technology of Guilin [20120112-1, 20120112-2]
- Program to Sponsor Teams for Innovation in the Construction of Talent Highlands in Guangxi Institutions of Higher Learning
(1-x)(K0.5Na0.5)NbO3-xBa(2)NaNb(5)O(15) [(1-x)KNN-xBNN, 0x0.1] ceramics were prepared by solid-state reaction method. X-ray diffraction analysis of the ceramics revealed that the crystal structure changed from orthorhombic to rhombohedral with increasing BNN content. Dielectric measurement showed that the ceramics exhibited good dielectric temperature stability over a wide temperature range. Basic mechanisms of the conduction and relaxation processes have been investigated using impedance spectroscopy analyses. It was concluded that the conduction and relaxation processes were thermally activated and oxygen vacancies were the possible ionic charge carriers at higher temperatures.
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