Article ID Journal Published Year Pages File Type
1595938 Solid State Communications 2007 4 Pages PDF
Abstract

The effect of tetravalent Ti+4 substitution in Mg0.95Mn0.05Fe2O4 on its magnetic and electrical properties has been studied using X-ray diffraction, Mössbauer spectroscopy, isothermal dc magnetization and dielectric measurements. X-ray diffraction studies have shown the structural transformation from cubic to tetragonal with the Ti+4 substitution. The Mössbauer spectra of Mg0.95Mn0.05Fe1.0Ti1.0O4 recorded in the temperature range 20–300 K shows the presence of the magnetic as well as quadrupole interactions. The isothermal hysteresis loop infers that the system exhibits a ferrimagnetic ordering at room temperature. The Zero-field-cooled (ZFC) and field-cooled (FC) magnetization studies support ferrimagnetic ordering of Mg0.95Mn0.05Fe1.0Ti1.0O4 at room temperature. Signatures of ferroelectric transition have been observed in the temperature range 200–300 K from dielectric measurements. The observed magnetic and dielectric behaviour indicate that this material exhibits multiferroic behaviour.

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Physical Sciences and Engineering Materials Science Materials Science (General)
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