Technological modification of spinel-based CuxNi1-x-yCo2yMn2-yO4 ceramics

The peculiarities of electroceramics formation in the CuxNi1-x-yCo2yMn2-yO4 (x = 0.1-0.8; y = 0.1-0.9-x) system were studied under different sintering conditions. Structure-properties relations for these semiconducting materials, obtained at different sintering temperatures, are discussed. The elect...

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Veröffentlicht in:	Journal of the European Ceramic Society 2001, Vol.21 (10-11), p.2067-2070
Hauptverfasser:	SHPOTYUK, O, KOVALSKIY, A, MROOZ, O, SHPOTYUK, L, PECHNYO, V, VOLKOV, S
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals Electrotechnical and electronic ceramics Exact sciences and technology Technical ceramics
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Zusammenfassung:	The peculiarities of electroceramics formation in the CuxNi1-x-yCo2yMn2-yO4 (x = 0.1-0.8; y = 0.1-0.9-x) system were studied under different sintering conditions. Structure-properties relations for these semiconducting materials, obtained at different sintering temperatures, are discussed. The electrical conductivity and activation energy show strong dependence on sintering temperature. Two groups of investigated ceramics with a different character of electrical conductivity dependence on sintering temperature are distinguished. The results are explained in the framework of the model of thermally induced cation rearrangement in octahedral and tetrahedral sites of electroceramics. 5 refs.
ISSN:	0955-2219 1873-619X
DOI:	10.1016/S0955-2219(01)00173-X