Studies on Mn3O4·MgAl2O4 system

Keer, H. V. ; Bodas, M. G. ; Bhaduri, A. ; Biswas, A. B. (1975) Studies on Mn3O4·MgAl2O4 system Journal of Inorganic and Nuclear Chemistry, 37 (7-8). pp. 1605-1607. ISSN 0022-1902

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Structural, electrical and magnetic properties of solid solutions of tetragonal Mn3O4 (c/a>1) and cubic MgAl2O4 over the whole composition range have been investigated. All the samples were found to be monophasic and exhibited either tetragonal or cubic symmetry at room temperature/ Tetragonal-cubic transition appeared to be of the first order. Electrical conductivity decreases with increasing concentration of MgAl2O4 and conduction presumably occurs via 'hopping' of holes from Mn3+ + Mn2+ at B sites at 600<T<800 K. Magnetic susceptibility results indicate that all compositions are paramagnetic in the range 80-340 K and would order ferrimagnetically at lower temperatures, except (Mn3O4)0·2 (MgAl2O4)0·8, which may exhibit antiferromagnetism.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:81131
Deposited On:04 Feb 2012 07:46
Last Modified:04 Feb 2012 07:46

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