Magnetic Properties of Cobalt and Manganese Oxide Spinel Ceramics

Abstract:

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Magnetic susceptibility measurements, magnetization and neutron diffraction results at low temperature for cobalt and manganese oxide spinel ceramics are presented. The Curie temperature varies similarly with the sample composition in ceramics and powders. The experimental molar Curie constant variation is explained by the presence of Co2+, CoIII, Mn3+ and Mn4+, and possibly Co3+ in the octahedral sites for the cobalt rich phases. The magnetic moments of the cations in tetrahedral and octahedral sites are not collinear and the global magnetization is oriented in a third direction.

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Periodical:

Edited by:

Pietro VINCENZINI, Vojislav V. MITIC, Alois LOIDL and Dino FIORANI

Pages:

143-148

DOI:

10.4028/www.scientific.net/AST.67.143

Citation:

S. Guillemet-Fritsch et al., "Magnetic Properties of Cobalt and Manganese Oxide Spinel Ceramics", Advances in Science and Technology, Vol. 67, pp. 143-148, 2010

Online since:

October 2010

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Price:

$35.00

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