| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1486695 | Journal of Non-Crystalline Solids | 2005 | 9 Pages |
Abstract
The crystallization behavior of heat treated amorphous Fe40Ni38B18Mo4 alloy was studied by TEM in order to investigate the suitability of this material as a soft nanostructured magnetic alloy. Significantly, the phases observed during primary and secondary crystallization were nanosized Fe-Ni solid solution and (FeNiMo)23B6, respectively. The primary crystals had an unusual irregular morphology due to the presence of molybdenum. A twinned structure was observed by nanobeam diffraction within the Fe-Ni nanocrystals. The phase transformation mechanism was compared with that of Fe40Ni40B20 and Fe40Ni40P14B6 alloys and the differences were analyzed from a thermodynamic point of view. The magnetic properties, Ms and Hc, were studied by VSM, it was found that improved soft magnetic properties were achieved by heat treatment. A mean crystal size of 10Â nm and a volume fraction of 1% was found to be the microstructure which would yield the lowest coercivity.
Related Topics
Physical Sciences and Engineering
Materials Science
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Authors
S.W. Du, R.V. Ramanujan,