Sputter-deposited (Fe-Pt)-MgO composite films for perpendicular recording media

Author

Suzuki, Toshio ; Ouchi, Kazuhiro

Author_Institution

Akita Res. Inst. of Adv. Technol., Japan

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1283

Lastpage

1285

Abstract

Aiming for improvement of a pure Fe–Pt perpendicular double-layered medium, a composite film of (Fe–Pt)–MgO with ordered FePt-fct(001) phase was prepared by sputtering on heated substrates without any post-annealing. It was found that the (Fe–Pt)–MgO films exhibited a large perpendicular magnetic anisotropy in the preparation condition of lower substrate temperature than that were required for the films with other additives such as Al₂O₃ and SiO₂. The (Fe–Pt)–MgO composite films showed hysteresis loop with relatively steep slope at and smaller magnetic domains than that of the pure Fe–Pt film. A higher recording resolution was achieved for the perpendicular double-layered medium with the (Fe–Pt)–MgO composite film.

Keywords

ferromagnetic materials; iron alloys; magnesium compounds; magnetic domains; magnetic hysteresis; magnetic thin films; perpendicular magnetic anisotropy; perpendicular magnetic recording; platinum alloys; sputter deposition; (Fe-Pt)-MgO; heated substrates; hysteresis loop; magnetic domains; perpendicular magnetic anisotropy; perpendicular recording media; recording resolution; sputter-deposited (Fe-Pt)-MgO composite films; substrate temperature; Magnetic anisotropy; Magnetic domains; Magnetic films; Magnetic hysteresis; Magnetic recording; Perpendicular magnetic recording; Sputtering; Substrates; Temperature; Thermal stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950819

Filename

950819