Electrical Properties of ZnO Varistors Prepared by Microwave Sintering Process
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概要
- 論文の詳細を見る
Microwave sintering processes were observed to substantially enhance the densification rate for ZnO varistor materials. Samples microwave sintered at 900–1200° C for 10 min reached the same high density as those conventionally sintered at the same temperature for 60 min. A similar tendency was observed for the grain size. Prolonged microwave sintering, however, resulted in fast grain growth and degraded electric field–current density ( E–J ) properties. Capacitance–voltage ( C–V ) analysis indicated that the degradation in E–J behavior primarily resulted from the decrease in grain boundary barrier height. The modification of the grain boundary electrical properties, in turn, is ascribed to the loss of volatile Bi species along the grain boundaries.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 1996-09-15
著者
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Lin I-nan
Material Science Center National Tsing-hua University
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Kuo Cheng-tzu
Institute Of Materials Science And Engineering National Chiao-tung University
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Chen Chang-shun
Department Of Mechanical Engineering National Chiao-tung University
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Chen Chang-Shun
Department of Mechanical Engineering, National Chiao-Tung University, Hsinchu 30050, Taiwan, R.O.C.
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Lin I-Nan
Materials Science Center, National Tsing-Hua University, Hsinchu 30043, Taiwan, R.O.C.
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Kuo Cheng-Tzu
Institute of Materials Science and Engineering, National Chiao-Tung University, Hsinchu 30050, Taiwan, R.O.C.
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