Fabrication of ultra high density ferromagnetic column arrays by porous alumina template for magnetic recording media

Author

Shimizu, T. ; Morimoto, K. ; Nagayanagi, M. ; Fujii Y ; Yaegashi, O. ; Wu, G.R. ; Sakaue, H. ; Takahagi, T. ; Shingubara, S.

Author_Institution

Graduate Sch. of ADSM, Hiroshima Univ., Japan

fYear

2003

fDate

29-31 Oct. 2003

Firstpage

62

Lastpage

63

Abstract

In this paper, we succeeded in the fabrication of Co columns that had perpendicular anisotropy with density of 800 Gbit/inch/sup 2/. The proposed method for realizing the high-density magnetic recording media is suitable for obtaining perpendicular anisotropy, since the anisotropy can be controlled by changing the aspect ratio of the magnetic columns. For realizing ferromagnetic column array with higher recording density, filling of ferromagnetic materials in the porous alumina nanoholes formed at anodic voltages lower than 10 V is essential, and further study is in progress.

Keywords

cobalt; electrodeposition; ferromagnetic materials; magnetic hysteresis; perpendicular magnetic anisotropy; perpendicular magnetic recording; Al/sub 2/O/sub 3/; Co; Co columns; ferromagnetic materials; magnetic recording media; perpendicular anisotropy; porous alumina nanoholes; porous alumina template; recording density; ultra high density ferromagnetic column arrays; Anisotropic magnetoresistance; Anodes; Fabrication; Magnetic anisotropy; Magnetic films; Magnetic recording; Oxidation; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Microprocesses and Nanotechnology Conference, 2003. Digest of Papers. 2003 International

Conference_Location

Tokyo, Japan

Print_ISBN

4-89114-040-2

Type

conf

DOI

10.1109/IMNC.2003.1268519

Filename

1268519