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Electrical properties of Mn₃-ₓCoₓO₄(0 ≤ x ≤ 3) ceramics: an interesting system for negative temperature coefficient thermistors

Rousset, Abel and Tenailleau, Christophe and Dufour, Pascal and Bordeneuve, Hélène and Pasquet, Isabelle and Guillemet-Fritsch, Sophie and Poulain, Véronique and Schuurman, Sophie Electrical properties of Mn₃-ₓCoₓO₄(0 ≤ x ≤ 3) ceramics: an interesting system for negative temperature coefficient thermistors. (2013) International Journal of Applied Ceramic Technology, 10 (1). 175-185. ISSN 1546-542X

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Official URL: http://dx.doi.org/10.1111/j.1744-7402.2011.02723.x

Abstract

Single-phase spinel manganese cobalt oxides Mn₃-ₓCoₓO₄ dense ceramics were prepared for the first time and their structural/electrical property relationships characterized. The electrical properties, that is, the resistivity at 25°C, the energetic constant, and the resistance drift at 125°C, were determined and correlated with the cation distribution. Finally, the electrical characteristics of the Mn₃-ₓCoₓO₄ system were compare'd with other important classes of manganese-based spinel oxides, Mn₃-ₓNiₓO₄ and Mn₃-ₓCuₓO₄, already commercialized as negative temperature coefficient (NTC) thermistors. The high values of energetic constant and low resistivities observed in Mn₃-ₓCoₓO₄ ceramics present a promising interest for such industrial applications.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Vishay (BELGIUM)
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Deposited By: cirimat webmestre
Deposited On:23 Sep 2013 14:06

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