Abstract
Pt, Mn and Sb were deposited on glass substrate, following by annealing to alloy PtMnSb. Effects of deposition order, heating rate in annealing and Mn content on crystallographic, magnetic and magneto-optic properties were investigated. Films prepared were found to preferentially orientate along a axis of PtMnSb prependicular to the film plane. The axis orientation strongly depended on deposition order and annealing conditions. Saturation magnetization Ms and polar Kerr rotation angle θk also depended on these conditions. Films deposited in order of Sb→Mn→Pt and annealed at the highest heating rate had the highest orientation and the largest values of Ms (430 emu/cc) and |θk| (1.3° at 633 nm wavelength). Films of a stoichiometric composition or including slightly exess Mn atoms had higher orientation and larger values of |θk|. It was also found that a peak position of |θk| shifted toward a shorter wavelength region, as the orientation became higher.
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