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
2h
IT Building

IT Building

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

Speaker

Mr Kalengay Mbela (UKZN)

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

PhD

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

T. Moyo Moyo@ukzn.ac.za

Apply to be<br> consider for a student <br> &nbsp; award (Yes / No)?

yes

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

yes

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

Co-authors

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

Presentation Materials

Peer reviewing

Paper