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Influence of the composition on the electrical properties of (Mn2.1−xNi0.9Six)O4 negative temperature coefficient thermistors

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Abstract

The influence of the composition on the electrical properties of (Mn2.1−x Ni0.9Si x )O4 (0≤x≤0.18) negative temperature coefficient (NTC) thermistors was studied. Major phases present in the sintered bodies of (Mn2.1−x Ni0.9Si x )O4 ceramics were solid solutions of Mn–Ni–Si oxides with a cubic spinel structure. The relationship between log resistivity (log ρ) and the reciprocal of absolute temperature (1/T) of the prepared NTC thermistors was linear, indicative of NTC characteristics. The resistivity, B 25/85 constant, and activation energy of the thermistors increased with increasing SiO2 content.

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Authors and Affiliations

  1. Department of Advanced Materials Engineering and Center for Advanced Materials, Sejong University, Seoul, 143-747, Korea

    K. Park & S. J. Yun

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  1. K. Park
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  2. S. J. Yun
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Park, K., Yun, S.J. Influence of the composition on the electrical properties of (Mn2.1−xNi0.9Six)O4 negative temperature coefficient thermistors. Journal of Materials Science: Materials in Electronics 15, 359–362 (2004). https://doi.org/10.1023/B:JMSE.0000025678.97940.fe

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  • DOI: https://doi.org/10.1023/B:JMSE.0000025678.97940.fe

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