9-13 July 2012
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=11&confId=14"><font color=#ff0000>SAIP2012 PROCEEDINGS AVAILABLE</font></a>

Synthesis and Magnetic properties of Mg<sub>0.2</sub>Cr<sub>1.8-x</sub>Fe<sub>x</sub>O<sub>3</sub> oxides

10 Jul 2012, 17:30
IT Building

IT Building

Poster Presentation Track A - Division for Condensed Matter Physics and Materials Poster Session


Mr Kalengay Mbela (UKZN)

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD)?


Main supervisor (name and email)<br>and his / her institution

T. Moyo Moyo@ukzn.ac.za

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Abstract content <br> &nbsp; (Max 300 words)

We report the magnetic properties of Mg0.2Cr1.8-xFexO3 (x = 0.3, 0.5, 0.7 and 0.9) compounds. The oxides were produced by hydrothermal process and sintered at 600 ºC for 12 hours. The X-ray diffraction (XRD) data indicate single phase corundum structure in all the samples. The Mössbauer spectra recorded at about 300 K show transition from paramagnetic to ordered magnetic spin state at x = 0.5. The magnetization data reveals superparamagnetic nature of the oxides presented. The shift in hysteresis loops observed along the magnetic field axis is associated with exchange bias effect.

Primary author


Dr Justice Msomi (UKZN) Dr Thomas Moyo (UKZN)

Presentation Materials

Peer reviewing