Effect of cation distribution on the properties of Mn0.2ZnxNi0.8−xFe2O4

Thumbnail Image
Date
2002
Authors
Singh, Amarendra K
Goel, T C
Mendiratta, R G
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Mn0.2ZnxNi0.8−xFe2O4 (x=0.2, 0.3, 0.4, 0.5, 0.6) are synthesized by the citrate precursor method. Effects of zinc substitution on DC resistivity, dielectric relaxation intensity, initial permeability, saturation magnetization and Curie temperature have been investigated. It is observed that resistivity increases with increase in zinc concentration up to x=0.5 and then decreases. The observed behaviour is explained in terms of hopping and site preference of ions in the lattice. The main contribution to dielectric relaxation intensity is observed to be due to space charge polarization. Initial permeability is observed to increase with increase in zinc concentration. Saturation magnetization increases up to x=0.4 and then starts decreasing. Canting effect is observed for higher zinc concentrations.
Description
Keywords
Magnetically ordered materials, Chemical synthesis, Electron–electron interactions, Magnetic properties
Citation
Collections