Oxidation induced alloy composition and magnetic property change in FePt thin film

Author

Yuan, J. ; Wu, P. ; Hu, X. ; Qian, J.

Author_Institution

Dept. of Mater. Sci. & Eng., Tsinghua Univ., Beijing, China

fYear

2005

fDate

4-8 April 2005

Firstpage

881

Lastpage

882

Abstract

The microstructure of FePt thin films as a function of thermal annealing is investigated using a combination of X-ray diffraction (XRD) and transmission electron microscopy (TEM). Results show that Fe preferentially forms oxides at the alloy surface, leaving Fe bleached from the alloy film. The shift of the (111) diffraction peak of the L1₀ FePt phase in the XRD pattern is correlated with oxidation-induced composition change in the film. The change of magnetic properties of the film is also measured and can also be explained by the oxidation induced microscopic change.

Keywords

X-ray diffraction; crystal microstructure; ferromagnetic materials; iron alloys; magnetic multilayers; magnetic thin films; metallic thin films; oxidation; platinum alloys; rapid thermal annealing; transmission electron microscopy; FePt; L1₀ FePt phase; X-ray diffraction; alloy composition; diffraction peak; magnetic property; microstructure; oxidation; thermal annealing; thin film; transmission electron microscopy; Annealing; Iron alloys; Magnetic films; Magnetic properties; Microstructure; Oxidation; Transistors; Transmission electron microscopy; X-ray diffraction; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN

0-7803-9009-1

Type

conf

DOI

10.1109/INTMAG.2005.1463869

Filename

1463869