Title :
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
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;
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
DOI :
10.1109/INTMAG.2002.1001195
