Title :
Giant magnetic Kerr rotation for MnSbPt films with NiAs structure
Author :
Takahashi, Migaku ; Shoji, Hiroki ; Hozumi, Yasushi ; Wakiyama, Tokuo ; Takeda, Yoshihiko ; Itakura, Yoshio
Author_Institution :
Dept. of Electron. Eng., Tohoku Univ., Sendai, Japan
fDate :
11/1/1994 12:00:00 AM
Abstract :
Magnetic and magneto-optical properties, Kerr rotation angle, Kerr ellipticity and reflectance, were investigated for Pt substituted MnSb compound films with film thickness of about 1000 Å by RF sputtering in the concentration range of 44 at%<Mn<55at%, 37 at%<Sb<44 at%, 4 at%<Pt<15 at%. MnSbPt films with the concentration of 50 at%Mn, 44 at%Sb and 6 at%Pt annealed at 300°C showed giant Kerr rotation angle of about 0.9° at short wavelength of λ=500 nm. The results of structural analysis with X-ray and NMR revealed that the giant Kerr rotation angle observed in present films is closely related to the MnSb compound including Pt atom in NiAs structure
Keywords :
Kerr magneto-optical effect; X-ray diffraction; antimony alloys; magnetic thin films; manganese alloys; nuclear magnetic resonance; perpendicular magnetic anisotropy; platinum alloys; sputtered coatings; Kerr ellipticity; MnSbPt; NMR; RF sputtering; X-ray diffraction; anisotropy; films; giant magnetic Kerr rotation; reflectance; rotation angle; structural analysis; Anisotropic magnetoresistance; Bismuth; Magnetic anisotropy; Magnetic films; Magnetic properties; Magnetooptic recording; Optical films; Perpendicular magnetic anisotropy; Reflectivity; Sputtering;
Journal_Title :
Magnetics, IEEE Transactions on
