Speaker
Mr
Amos Nhlapo
(University of KwaZulu-Natal)
Description
In this study, nanoparticles of NixCo1-xFe2O4 (x = 0, 0.1, 0.2, 0.3, 0.8 and 1.0) were produced by glycol thermal process and characterized by several techniques such as XRD, TEM, SEM, FTIR, Mössbauer spectroscopy and magnetization measurements. The as-prepared fine powders show transformation from single- to multi-domain behaviour at a critical particle size dependent on sample chemical composition. The effect of domain transformation on the magnetic properties has been investigated. 57Fe Mössbauer spectral studies and magnetization data show significant differences between single- and multi-domain particles. The results are explained on the basis of crystallite size and constituent atoms. The variation of the magnetic parameters such coercive fields and saturation magnetization revealed by hysteresis loop measurements in the temperature range 4 – 300 K is also reported.
Supervisor details<br><b>If not a student, type N/A.</b><br>Student abstract submision<br>requires supervisor permission:<br>please give their name,<br> institution and email address.
Name: Prof J.Z Msomi,
Institution: University of Zululand
email address: msomij@unizulu.ac.za
| Please confirm that you<br>have carefully read the<br>abstract submission instructions<br>under the menu item<br>"Call for Abstracts"<br><b>(Yes / No)</b> | Yes |
|---|---|
| Consideration for<br>student awards<br><b>Choose one option<br>from those below.</b><br>N/A<br>Hons<br>MSc<br>PhD | N/A |
Primary author
Mr
Amos Nhlapo
(University of KwaZulu-Natal)
Co-authors
Prof.
Justice Msomi
(University of Zululand)
Dr
Thomas Moyo
(University of KwaZulu-Natal)
