Electrical properties of Mn₃-ₓCoₓO₄(0 ≤ x ≤ 3) ceramics: an interesting system for negative temperature coefficient thermistors - Archive ouverte HAL Access content directly
Journal Articles International Journal of Applied Ceramic Technology Year : 2013

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

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.
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Dates and versions

hal-03526564 , version 1 (14-01-2022)

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Abel Rousset, Christophe Tenailleau, Pascal Dufour, Hélène Bordeneuve, Isabelle Pasquet, et al.. Electrical properties of Mn₃-ₓCoₓO₄(0 ≤ x ≤ 3) ceramics: an interesting system for negative temperature coefficient thermistors. International Journal of Applied Ceramic Technology, 2013, 10 (1), pp.175-185. ⟨10.1111/j.1744-7402.2011.02723.x⟩. ⟨hal-03526564⟩
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