Dielectric Properties of TiO2-NiO Ceramics and Its Response Mechanism

Abstract:

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NiO-NiTiO3 composite ceramics were prepared by the conventional solid state reaction process and dielectric properties were investigated as a function of frequency and temperature. The results indicate that all samples showed high dielectric constant ~103 at 0.1 kHz, but a remarkable decrease of the dielectric loss appeared when the volume fraction of NiTiO3 phase reached 42.4%. Relaxor-like peaks were observed in the temperature dependence of the dielectric constant with ceramics having low composition of NiTiO3 phase (≤21.2%). The possible response mechanism associated with the microstructure and the associated defects of the composites was discussed.

Info:

Periodical:

Key Engineering Materials (Volumes 280-283)

Edited by:

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

Pages:

115-118

DOI:

10.4028/www.scientific.net/KEM.280-283.115

Citation:

J. F. Wang et al., "Dielectric Properties of TiO2-NiO Ceramics and Its Response Mechanism", Key Engineering Materials, Vols. 280-283, pp. 115-118, 2005

Online since:

February 2007

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Price:

$35.00

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