Title :
Magnetic properties of electron beam evaporated CoPt alloy thin films
Author :
Yamada, Yoshiyasu ; Suzuki, Takao ; Abarra, E. Noel
Author_Institution :
Inf. Storage Mater. Lab., Toyota Technol. Inst., Nagoya, Japan
fDate :
3/1/1998 12:00:00 AM
Abstract :
A systematic study of the magnetic and structural properties of Co 75Pt25 alloy thin films has been carried out. Films deposited onto Al2O3(0001), Al2O 3(112¯0) and MgO(111) substrates at temperatures from 230 to 450°C exhibit a large perpendicular magnetic anisotropy (>1.0×107 erg/cm3). The Co3Pt hcp ordered state is also observed by X-ray and electron diffraction and this ordered state is a plausible origin of the strong anisotropy, especially in those films for higher substrate temperature (>300°C)
Keywords :
X-ray diffraction; cobalt alloys; electron beam deposition; electron diffraction; ferromagnetic materials; magnetic thin films; perpendicular magnetic anisotropy; platinum alloys; 230 to 450 degC; Al2O3; CoPt; MgO; X-ray diffraction; electron beam evaporation; electron diffraction; magnetic properties; ordered state; perpendicular magnetic anisotropy; structural properties; substrate temperature; Anisotropic magnetoresistance; Cobalt alloys; Electron beams; Magnetic anisotropy; Magnetic films; Magnetic properties; Perpendicular magnetic anisotropy; Platinum alloys; Temperature; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
