Exchange anisotropy in epitaxial Mn/sub 1-x/Pt/sub x//NiFe bilayers

Author

Kume, Tsuyoshi ; Nagae, E. ; Sugiyama, Youhei ; Kato, Toshihiko ; Iwata, Satoru ; Tsunashima, Shigeru

Author_Institution

Dept. of Electron., Nagoya Univ., Aichi, Japan

fYear

2002

Abstract

Summary form only given. MnPt/ferromagnet bilayers exhibit a large exchange coefficient J = 0.11 [erg/cm/sup 2/] and a high blocking temperature of T/sub B/ = 380/spl deg/C. Saito et al. have reported that Mn/sub 88/Pt/sub 12//NiFe bilayers prepared by sputtering method show a large exchange bias field without heat treatments. In this study, Mn/sub 1-x/Pt/sub x/ bilayers with Pt concentration around 12 at.% have been prepared by MBE method and their crystal structure and magnetic properties are analyzed in detail.

Keywords

antiferromagnetic materials; crystal structure; exchange interactions (electron); ferromagnetic materials; interface magnetism; interface structure; iron alloys; magnetic epitaxial layers; manganese alloys; molecular beam epitaxial growth; nickel alloys; platinum alloys; 380 C; MBE method; Mn/sub 1-x/Pt/sub x/-NiFe; MnPt/ferromagnet bilayers; Pt concentration; crystal structure; epitaxial Mn/sub 1-x/Pt/sub x//NiFe bilayers; exchange anisotropy; exchange bias field; high blocking temperature; large exchange coefficient; magnetic properties; Anisotropic magnetoresistance;

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.2002.1001195

Filename

1001195