Effect of Li+ and Mn2+ Doping on the Electrical Properties of SrTiO3-Based Varistor Ceramics

Abstract:

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Effect of Li+ and Mn2+ doping on the electrical properties of SrTiO3-based varistor ceramics was investigated. The results showed that the varistor ceramics cannot possess ideal electrical properties when only Li+ or Mn2+ was doped. However, when Li+ and Mn2+ were properly doped together, the samples acquired excellent electrical properties: V1mA = (5.7 ~ 11.7)V/mm; α = 6.8 ~ 11.0; er = (2.4 ~ 4.4) × 105; tan d = (7.1 ~ 10.4)%. When the contents of Li2CO3 and MnCO3 were 1.00 mol% and 0.05 mol% respectively, the nonlinear coefficient α reached the largest value of 11.0. Compared with only Mn2+ doping, the addition of Li+ increases the α value significantly.

Info:

Periodical:

Key Engineering Materials (Volumes 280-283)

Edited by:

Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li

Pages:

361-364

DOI:

10.4028/www.scientific.net/KEM.280-283.361

Citation:

Y. X. Xu et al., "Effect of Li+ and Mn2+ Doping on the Electrical Properties of SrTiO3-Based Varistor Ceramics", Key Engineering Materials, Vols. 280-283, pp. 361-364, 2005

Online since:

February 2007

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Price:

$35.00

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