Epitaxial growth, perpendicular magnetic anisotropy, and domain structure of Co/Pt(311) and (111) multilayers

摘要

We have simultaneously grown [Co(t Angstrom)/Pt(10 Angstrom)](30) (t=2-10 Angstrom) multilayers on Pt(311) and Pt(111) planes by molecular beam epitaxy.:The Pt(311) and Pt(111) seeding layers were prepared on Mo(211)/Al2O3(1 (1) over tilde 00) and Mo(110)/Al2O3(11 (2) over bar 0), respectively. New epitaxial relations between Pt and Mo layers in both cases are established by electron and x-ray diffraction. The Co/Pt multilayers on Pt(311) were grown mainly as a (311) structure but mixed with a small amount of (211) phase. The Co/Pt(311) multilayers display large perpendicular magnetic anisotropy with results comparable to those of the (111) samples. In addition, the Co/Pt(311) multilayers exhibit stripelike magnetic domain structure with domain displacement growing along the [0 (1) over bar 1] azimuth, in marked contrast to the (111) multilayers which show a very irregular domain structure. [S0163-1829(99)04401-X]. [References: 25]