Microwave-assisted synthesis and magneto-electrical properties of Mg-Zn ferrimagnetic oxide nanostructures

• Published in: Physica. B, Condensed matter Condensed matter, 2018-02, Vol.530, p.177-182
• Main Authors: Gore, Shyam K., Tumberphale, U.B., Jadhav, Santosh S., Kawale, R.S., Naushad, Mu, Mane, Rajaram S.
• Format: Article
• Language: English
• Subjects: Coercivity; Dielectric; Dielectric properties; Dielectrics; Electrical properties; Electromagnetism; Ferrimagnetic semiconductor; Ferrimagnetism; Ferrites; Grain boundaries; Layered-rock like morphology; Magnesium ferrites; Magnetic properties; Magnetic saturation; Magnetization; Micro-strain; Semiconductors; Sol-gel processes; Spin canting; Substitutes; Temperature effects; Zinc
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2017.11.044

The structural, magnetic and dielectric properties of Mg–Zn mixed ferrimagnetic oxides are studied and reported with an aim to know the role of non-magnetic Zn2+ in modification of the properties. Ferrites with the general formula Mg1−xZnxFe2O4 (MZF) where ‘x’ varies from 0.0 to 0.5 were synthesized by microwave assisted sol-gel combustion method. Effects on the magnetic and electrical properties caused by changes in surface morphology, grain size, grain boundary, and micro-strain on account of Zn2+-substitution have been explored in-depth. These effects reveal considerable variations in coercive force, saturation magnetization and residual magnetization values obtained from hysteresis curves of MgFe2O4 on Zn2+ substitution. The effects of temperature and frequency on dielectric properties are investigated and reported. •We report the effect of Zn-substitution on the structural, magnetic and dielectric properties of magnesium ferrite (MgFe2O4) nanostructures.•For structural and surface morphology analyses are performed as a function of non-magnetic Zn-doping.•Effect of temperature, varied from 243 K to 353 K, on the dielectric properties of Mg1−xZnxFe2O4 nanostructures has been attempted.