Structure, properties and cation distribution of spinels of the series Fe zNi 1− zMn 2O 4 (0⩽ z ⩽ 2/3)

• Published in: Journal of alloys and compounds Vol. 215; no. 1; pp. 97 - 103
• Main Authors: Töpfer, J., Neupert, L., Schütze, D., Wartewig, P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 1994
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/0925-8388(94)90824-9

Spinels of the series Fe z Ni 1− z Mn 2O 4 (0⩽ z ⩽ 2/3) were prepared by a ceramic technique. The compounds were found to crystallize in the cubic spinel structure in the range 0 ⩽ z ⩽ 1/2; the compound with z = 2/3 shows a tetragonal distortion. Starting from the cation distributions of the spinel NiMn 2O 4 a model of the substitution of cations is derived. This is discussed in close relation with the results of Mössbauer spectroscopy and electrical conductivity.