Microstructure and magnetic properties of oxidized Fe-Pt films with high rate order-disorder transformation

Author

Na, Kyung-Hwan ; Na, Jong-Gab ; Kim, Hi-Jung ; Jang, Pyung-Woo ; Kim, Jong-Ryoul ; Lee, Sung-Rae

Author_Institution

Thin Film Technol. Res. Center, Korea Inst. of Sci. & Technol., Seoul, South Korea

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1312

Lastpage

1314

Abstract

Structural and magnetic properties of air-annealed Fe_1-xPt_x films with a high rate order-disorder transformation were analyzed by transmission electron microscopy, Auger electron microscopy, Rutherford backscattering spectroscopy and vibrating sample magnetometer. The air-annealed films consisted of three layers, that is, crystalline Fe oxide layer, Fe-Pt upper layer with small grains, and Fe-Pt bottom layer with large grains from the film surface. Those layers were nonmagnetic, magnetically hard, and with magnetically hard and soft phase, respectively. The Fe content in Fe-Pt metallic layer decreased and then increased with increasing film depth from the oxide/metal interface

Keywords

Auger electron spectra; Rutherford backscattering; annealing; coercive force; grain size; iron alloys; magnetic thin films; order-disorder transformations; oxidation; platinum alloys; sputtered coatings; transmission electron microscopy; Auger electron microscopy; Fe-Pt; Fe_1-xPt_x film; Rutherford backscattering spectroscopy; air annealing; coercivity; grain size; magnetic properties; microstructure; order-disorder transformation; oxidation; sputter deposition; structural properties; transmission electron microscopy; vibrating sample magnetometry; Backscatter; Iron; Magnetic analysis; Magnetic films; Magnetic force microscopy; Magnetic properties; Magnetometers; Microstructure; Spectroscopy; Transmission electron microscopy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950827

Filename

950827