Effect of Sb Addition on ZnO Grain Growth and Electrical Characteristics of Bi–Co–Mn–Ba-Added ZnO Varistors

Ai Fukumori; Takayuki Watanabe; Yuuki Sato; Shinzo Yoshikado

doi:10.4028/www.scientific.net/KEM.485.253

Paper Titles

Electrical Properties of La(Cr,Mn)O₃ NTC Materials
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Characterization of Grain Boundaries of Lead-Free Semiconducting Ceramics Using BaTiO₃-(Bi_1/2K_1/2)TiO₃ System
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Fabrication of Lead-Free Semiconducting Ceramics Using BaTiO₃-(Bi_1/2Na_1/2)TiO₃ System by Sintering in Air Atmosphere
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Multilayer Varistor with Low-Voltage Characteristics from ZnO + ACoO₃ Ceramics (A = Ca, Sr and Ba)
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Effect of Sb Addition on ZnO Grain Growth and Electrical Characteristics of Bi–Co–Mn–Ba-Added ZnO Varistors
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Effect of Simultaneous Addition of Zr and Y on Electrical Characteristics of ZnO Varistors
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Cathodoluminescence of ZnO Crystals Prepared via Electric Current Heating Method Using Zn Wire
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Resistivity of Thin Films of MoSi₂–Si Composites
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Investigation of Electrical Hydrogen Detection Properties of Pt/WO₃ Thin Films Prepared by Sol-Gel Method
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Effect of Sb Addition on ZnO Grain Growth and Electrical Characteristics of Bi–Co–Mn–Ba-Added ZnO Varistors

Abstract:

With the goal of fabricating varistors with low breakdown voltages (varistor voltages), the effect of adding Sb to Bi-Co-Mn-Ba-added ZnO varistors on the ZnO grain size was investigated. To obtain a uniform ZnO grain size without reducing the grain size, a small amount (e.g., 0.01 mol%) of Sb was added as an additive. This addition suppresses the variation in the ZnO grain size without reducing the grain size. It also improved the resistance to electrical degradation because compounds of Ba and Mn were not formed.