High coercivity and small grains of Fe/sub 60-x/Pt/sub 40/Cu/sub x/ ternary thin films

Author

Na, J.G. ; Na, K.H. ; Park, K.M. ; Jang, P.W. ; Kim, H.J.

Author_Institution

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

fYear

2002

Abstract

Summary form only given. L1/sub 0/ FePt thin films with high coercivity and remanence are generally considered a good potential material for use as a high density recording medium. The medium also requires isolated small particles to reduce inter-grain magnetic interactions, which leads to lower noise. Many third metallic elements such as Cr, Ti, W, and etc were added to achieve these goals. However, decrease of coercivity was unavoidable in these metallic films. In this paper we first report a high coercivity as well as smaller grains of Fe/sub 60-x/Pt/sub 40/Cu/sub x/ ternary thin films. Coercivity higher than 10 kOe and small grains of 30 nm could be achieved when 4 at. % Cu were added in 50 nm Fe/sub 60/Pt/sub 40/ films. For these, 50 nm Fe/sub 60-x/Pt/sub 40/M/sub x/ (M=Cu, Cr) thin films were sputtered from Fe-Pt-(Cu, Cr) composite target on the coming 7059 glass by DC magnetron sputtering.

Keywords

coercive force; copper alloys; ferromagnetic materials; grain size; iron alloys; magnetic recording; magnetic thin films; platinum alloys; remanence; sputtered coatings; DC magnetron sputtering; Fe/sub 60-x/Pt/sub 40/Cu/sub x/; Fe/sub 60-x/Pt/sub 40/Cu/sub x/ thin films; high coercivity; high density recording medium; remanence; small grains; Chromium; Coercive force; Iron; Magnetic materials; Magnetic noise; Magnetic recording; Noise reduction; Remanence; Sputtering; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International

Conference_Location

Amsterdam, The Netherlands

Print_ISBN

0-7803-7365-0

Type

conf

DOI

10.1109/INTMAG.2002.1001304

Filename

1001304