Hard Magnetic FePt Thin Films and Nanostructures in L10 Phase

摘要：

By using high-resolution transmission electron microscopy the formation of the L10 phase in Fe-Pt multilayer can be studied in-situ during annealing. The formation of L10-FePt nuclei starts in the Pt layers by diffusion of Fe into the Pt layers. During annealing the L10-FePt nuclei grow in size and expand over the whole film. By using electron lithography patterned L10-Fe54Pt46 nanostructures have been produced. Below a critical dot thickness during post-annealing at high temperatures the dots split into an accumulation of isolated (single-domain) particles of irregular shape resulting in large coercivities of μ0Hc = 2.4 T.

关键词： nanostructure hard magnetic film coercivity L10 structure

作者: D.GOLL A.BREITLING N.H.GOO W.SIGLE M.HIRSCHER G.SCH(U)TZ

作者单位: Max-Planck-Institut f(u)r Metallforschung, Heisenbergstr.3, 70569 Stuttgart, Germany

会议类型: 国际会议

会议名称: 第19届国际稀土永磁及应用研讨会(19th International Workshop on Rare Earth Permanent Magnets & Their Applications)(REPM06)

会议地点: 北京

会议语种:英文

页码: 97-101

在线出版日期: 2006-08-29（万方平台首次上网日期，不代表论文的发表时间）