标题：Microstructure and magnetic microstructure of the Pr60Al 10Ni10Cu20-xFex (x=0, 4, 10, 15, 18) alloys observed by magnetic force microscopy
作者：Pang, Z.Y. ;Han, S.H. ;Wang, Y.T. ;Wang, W.H. ;Han, B.S.
作者机构：[Pang, Z.Y. ;Han, S.H. ] State Key Lab. of Crystal Materials, Sch. of Physics and Microelectronics, Shandong University, Shanda South Road 27, Jinan 2 更多
来源：Journal of Magnetism and Magnetic Materials
摘要：The microstructure and magnetic microstructure of the Pr 60Al10Ni10Cu20-xFe x (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 Lo¨ffler et al.'s new random-anisotropy model (Lo¨ffler, et al., Phys. Rev. Lett. 85 (9) (2000) 1990). © 2004 Elsevier B.V. All rights reserved.