Exchange anisotropy in PtMn / Ni 80 Fe 20 films on MgO ( 1 1 0 )
نویسندگان
چکیده
For the first time, we successfully developed exchange anisotropy of PtMn/Ni80Fe20 (1 1 0) bilayers grown on a MgO(1 1 0) substrate with or without Pt buffer layer. The results of angular-dependent magneto-optical Kerr effect indicate that the PtMn/Ni80Fe20(1 1 0) films possess unidirectional anisotropy with coercivity and exchange field around 135Oe and 60Oe, respectively. The Pt buffer layer strongly influences the formation of epitaxial PtMn/Ni80Fe20 bilayers. r 2003 Elsevier B.V. All rights reserved. PACS: 75.30.Gw; 75.50.Ee; 75.70. i
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