Electrical and magnetic properties of zinc-nickel manganites

Ghare, D. B. ; Sinha, A. P. B. (1968) Electrical and magnetic properties of zinc-nickel manganites Journal of Physics and Chemistry of Solids, 29 (6). pp. 885-894. ISSN 0022-3697

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0022-3697(68)90223-0


A series of compounds of the general formula ZnNixMn2-xO4 which contain both Mn3+ and Mn4+ ions at the octahedral sites have been synthesized and their structural, electrical and magnetic properties have been studied. The compounds in which x ≤ 0.3 are found to be tetragonal while those in which x ≥ 0.5 are cubic. The electrical properties indicate that the electrical conduction takes place by the hopping mechanism and thermoelectric coefficient measurements show that the compounds in which x ≤ 0.3 are p-type while those with x ≥ 0.5 are n-type. The compound with x=0.5 is however p-type below 200° C and n-type above this temperature. The plots of reciprocal magnetic susceptibility vs. temperature for all these compounds show a pronounced decrease in 1/χ M values below about 100° K, similar to ferrimagnetic compounds.

Item Type:Article
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ID Code:48931
Deposited On:18 Jul 2011 09:33
Last Modified:18 Jul 2011 09:33

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