面内高配向Ni-Fe/Mn-Ni交換結合膜の磁気トルク解析から求めた反強磁性層の磁気異方性

概要

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The magnetic anisotropy of the antiferromagnetic layer of Ni-Fe/Mn-Ni exchange-coupled bilayers was investigated by magnetic torque analysis. The Ni-Fe/Mn-Ni bilayers were highly oriented in their crystallographical axes in the film plane by epitaxial growth on MgO{110}single-crystal substrate. The magnetic anisotropy energy estimated from the saturated amplitude of torque curves is 6. 4×10^5 erg/cm^3. The symmetry of the magnetic anisotropy reflects the crystallographic symmetry of the antiferromagnetic layer. The easy axis of the magnetic anisotropy is independent of the direction of the applied field during the film deposition. We conclude that the origin of the magnetic anisotropy of the antiferromagnetic layer is magnetocrystalline anisotroy.
社団法人日本磁気学会の論文
2000-04-15