INFLUENCE OF MILLING TIME ON STRUCTURAL AND MAGNETIC PROPERTIES OF ZnO NANOPARTICLES PREPARED BY MECHANICAL MILLING
| Main Authors: | Tarigan, K.; Department of Electrical Engineering, Indonesia Institute of Technology, Ginting, M., Lam, V. D., Thanh, T. D., Manh, D. H., Phan, T. L. |
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| Format: | Article \\\\\\\"application/pdf\\\\\\\" eJournal |
| Bahasa: | eng |
| Terbitan: |
Himpunan Fisika Indonesia
, 2012
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| Online Access: |
http://jurnal.fisika-indonesia.org/index.php/JF/article/view/26 |
Daftar Isi:
- Influences of the milling time on structural and magnetic properties of nanocrystalline ZnO samples prepared by mechanical milling process have been studied in detail. Experimental results reveal that with varying the milling time from 1 to 24 hrs the average crystallite size calculated from Scherrer’s equation is in the range of 13 - 18 nm. All the samples exhibit the ferromagnetic behavior above room temperature. The ferromagnetic order increased with increasing the milling time. By means of X-ray diffraction analyses and measurements of the magnetization versus temperature, we suggest that the ferromagnetism in ZnO nanoparticles is due to a Fe0.902O-related metastable phase, in which Fe impurity is generated from the stainless steel vial wall and balls.