Perpendicular Magnetization of Epitaxial FePt(001) Thin Films with High Squareness and High Coercive Force

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概要

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• Perpendicular magnetized epitaxial FePt(001) thin films were prepared by RF-magnetron sputtering. The long range order parameter S of the FePt layer was found to be 〜0.9. Very narrow X-ray rocking curves (FWHM < 1°) of the FePt(002) and Pt(200) peaks indicate that both layers are essentially single crystalline, With increasing Pt buffer layer thickness dp_t the squareness M_r/M_s and coercive force H_c were found to increase to 100% and 7.2 kOe, respectively. The FePt(001) thin film has a |0.58°| peak at a photon energy of 2.0 eV (630 nm wavelength) in the polar magnetooptical Kerr rotation θ_k spectrum, which does not agree with that of the polycrystalline FePt ordered alloy.

• 1996-10-01

著者

• WATANABE Masato

  The Research Institute for Electric and Magnetic Materials

• Homma Motofumi

  Faculty Of Engineering Tohoku University

関連論文

• Magnetooptical Kerr Spectrometer for 1.2-5.9 eV Region and its Application to FePt/Pt Multilayers
• Perpendicular Magnetization of Epitaxial FePt(001) Thin Films with High Squareness and High Coercive Force

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