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http://dx.doi.org/10.4313/JKEM.2002.15.11.946

Electrical and Dielectric Properties of ZPCCY-Based Varistor Ceramics with Sintering Time  

남춘우 (동의대학교 전기공학과)
김향숙 (동의대학교 전기공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.15, no.11, 2002 , pp. 946-952 More about this Journal
Abstract
The electrical and dielectric characteristics of ZPCCY-based varistor ceramics were investigated in the sintering time range of 1∼3 h. Increasing sintering time deteriorated the nonlinearity, in which nonlinear exponent is decreased from 51.2 to 23.8 and leakage current is increased from 1.3 to 5.6 $\mu$A. As sintering time increases, the donor concentration was decreased in the range of (1.25∼l.73)$\times$10$\^$18/cm$\^$-3/ and the density of interface states is (3.64∼94.19)$\times$10$\^$12/cm$\^$-2/ with increasing sintering time. The increase in sintering time caused tan $\delta$ to increase in the range of 0.043 to 0.062 and relaxation time to increase in the range of 1.55 to 2.23 ㎲.
Keywords
ZPCCY-based varistor ceramics; Sintering time; Electrical properties; Dielectric properties; Relaxation time;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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