INFLUENCE OF THE NONMAGNETIC METAL SPACER ON THE MAGNETIC PROPERTIES AND MICROSTRUCTURE OF THE MULTILAYER FILMS

金属学报(英文版), 2006, 19(4): 235-243.

^1, , ^2, , ^3, , ^4, , ^5,

1.College of Mechanical Engineering, South China University of Technology, Guangzhou 510640,China;Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083,China

2.Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083,China

3.Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083,China

4.Department of Physics, Capital Normal University, Beijing 100037, China

5.Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

基金项目: 中国博士后科学基金(2005037580) 国家自然科学基金(50471093)

INFLUENCE OF THE NONMAGNETIC METAL SPACER ON THE MAGNETIC PROPERTIES AND MICROSTRUCTURE OF THE MULTILAYER FILMS

Keywords： NiFe/FeMn

Ta/NiFe/Bi (Ag,Cu)/FeMn/Ta and Ta/NiFeⅠ/FeMn/Bi (Ag, Cu)/NiFeⅡ/Ta films were prepared by magnetic sputtering. The texture and the dependences of the exchange-coupling field on the thickness of Bi, Ag, and Cu in Ta/NiFe/Bi(Ag, Cu) /FeMn/Ta and Ta/NiFeⅠ/FeMn/Bi(Ag, Cu)/NiFeⅡ/Ta films were studied. XPS results indicate that the Bi atoms migrated into the FeMn layer during the deposition process and a FeMnBi alloy was probably formed or the Bi atoms existed as an impurity in the FeMn layer in Ta/NiFe/Bi(Ag, Cu)/FeMn/Ta. Otherwise, in Ta/NiFeⅠ/FeMn/Bi (Ag, Cu ) /NiFeⅡ/Ta films, Bi, Ag, and Cu atoms do not remain entirely at the interface of the FeMn/NiFeⅡ film, but at least partly segregate to the surface of the NiFe film.

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INFLUENCE OF THE NONMAGNETIC METAL SPACER ON THE MAGNETIC PROPERTIES AND MICROSTRUCTURE OF THE MULTILAYER FILMS

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