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Control of the axis of chemical ordering and magnetic anisotropy in epitaxial FePt films

AuthorsFarrow, R. F. C.; Weller, D.; Marks, R. F.; Toney, M. F.; Cebollada, Alfonso ; Harp, G. R.
Issue Date1996
PublisherAmerican Institute of Physics
CitationJournal of Applied Physics 79: 5967-5969 (1996)
AbstractGrowth of epitaxial films of the L10 phase of FePt, with the tetragonal c axis along either the film normal or in-plane, is described. Films were grown by coevaporation of Fe and Pt, under ultrahigh vacuum conditions, onto a seed film of Pt grown on MgO or SrTiO3 substrates. The perpendicular or in-plane orientation of the c axis was controlled by selecting the (001) or (110) substrate plane, respectively. Nearly complete chemical ordering was achieved for growth at 500 °C for both orientations. Magnetic and magneto-optical characterization of these films confirmed the huge magnetic anisotropy expected for this phase. In the most highly ordered films, anisotropy fields in excess of 120 ROe were measured. © 1990 American Institute of Physics.
Identifiersdoi: 10.1063/1.362122
issn: 0021-8979
Appears in Collections:(IMN-CNM) Artículos
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