Effect of annealing on the microstructures and the magnetic properties of [Fe/Pt]16 multilayers on MgO (001) substrates

被引:5
|
作者
Zhang, A. M. [1 ]
Zhu, W. H. [1 ]
Wu, X. S. [2 ,3 ]
机构
[1] Hohai Univ, Coll Sci, Nanjing 210098, Jiangsu, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[3] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
关键词
Fe/Pt multilayer; Growth temperature; Magnetic anisotropy;
D O I
10.3938/jkps.63.521
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
[Fe/Pt](16) multilayers were deposited on MgO (001) single-crystal substrates by magnetic sputtering at various substrate temperatures to explore the effect of annealing on the microstructures and the magnetic properties. Results show that the FePt alloy becomes ordered at about 300 A degrees C and reaches a completely-ordered state at about 400 A degrees C. FePt films deposited at temperature above 300 A degrees C have a (001) preferred texture, which shows that the L1(0) FePt films have perpendicular magnetic anisotropy. The out-of-plane coercivity increases when the sample is transformed from [Fe/Pt](16) multilayers to a L1(0)-FePt alloy and increases by one order of magnitude when the morphology of the L1(0) FePt alloy evolves from a continuous to a granular surface.
引用
收藏
页码:521 / 524
页数:4
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