SAIP2012

The temperature dependence of the structure and magnetic properties of Mg-Mn-Co nanoferrites

12 Jul 2012, 17:30

2h

IT Building

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

Speaker

Mr Patrick Masina (School of Chemistry and Physics, Westville Campus,University of KwaZulu Natal)

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

Yes

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

Dr. T Moyo
moyo@ukzn.ac.za

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

yes

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

MSc

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

Mg_0.25Mn_0.5Co_0.25Fe₂O₄ and Mg_0.5Mn_0.25Co_0.25Fe₂O₄ nanoferrites were synthesized by the glycol-thermal technique. X-Ray diffraction (XRD) results revealed a single phase cubic structure for both as-prepared samples with an average grain size of about 8 nm. The magnetic properties of the nanoparticles were studied using a ⁵⁷Fe Mössbauer spectroscopy and Vibrating Sample Magnetometer (VSM). The samples were then annealed at 500 °C and 700 °C for 6 hrs argon atmosphere to investigate the effect of temperature on the structural and magnetic properties of the compounds. Our results show that the structure and magnetic properties depend on the annealing temperature.