Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9834486 | Journal of Magnetism and Magnetic Materials | 2005 | 5 Pages |
Abstract
The microstructure and magnetic microstructure of the Pr60Al10Ni10Cu20âxFex (x=0, 4, 10, 15, 18) alloys have been achieved simultaneously by employing a magnetic force microscope directly on the as-cast cylinder rod surface for the first time. By varying the content of Fe, the microstructure of the Pr-based alloy changes progressively from a full glassy state to a composite state with nanocrystalline particles embedded in the glassy matrix, and finally into a nanostructured state. The accompanying magnetic property gradually changes from paramagnetic to hard. The experiment directly evidences the existence of exchange coupling between the crystallites and the variety of the grain-size-dependent magnetic properties can be well explained by Löffler et al.'s new random-anisotropy model (Löffler, et al., Phys. Rev. Lett. 85 (9) (2000) 1990).
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Z.Y. Pang, S.H. Han, Y.T. Wang, W.H. Wang, B.S. Han,