| Autor: |
Kalita MP; Physics Department, Indian Institute of Technology Guwahati, Guwahati 781039, India., Perumal A, Srinivasan A, Pandey B, Verma HC |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of nanoscience and nanotechnology [J Nanosci Nanotechnol] 2008 Aug; Vol. 8 (8), pp. 4314-7. |
| DOI: |
10.1166/jnn.2008.an52 |
| Abstrakt: |
We report the structural and magnetic properties of the nanocrystalline Fe75Si15M10 (M-Al and Cr) powders prepared by mechanical alloying. The milling process produced a non-equilibrium solid solutions of bcc alpha-Fe(Si,Cr) and alpha-Fe(Si,Al). The average dislocation density increases and the average crystallite size decreases with increasing milling time. Magnetic property studies show that the coercivity of the sample increases and magnetization of the sample decreases with increasing milling time. The evolution of a non-equilibrium solid solution and the resulting magnetic properties of nanocrystalline powders are explained on the basis of Neel theory and modified random anisotropy model proposed by Shen et al. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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