Tuning Microstructural and Magnetic Properties of Ion-Beam-Deposited Ni80Fe20/NixFe1-xO Composite Films

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概要

• 論文の詳細を見る

• Composite films of Ni80Fe20/NixFe1-xO were prepared by dual ion-beam deposition. The structural and magnetic properties of these composite films were studied. The as-deposited Ni80Fe20 films ($a=3.55$ Å) consist of f.c.c. nanocrystallites while films prepared with 55% O2 in the assist beam consist of a rock-salt structure NixFe1-xO ($a=4.21$ Å) solid solution. The rock-salt phase undergoes an unusual dissociation reaction from NixFe1-xO into Ni ($a=3.52$ Å), NiO ($a=4.19$ Å), and NiFe2O4 ($a=8.33$ Å) upon annealing. The differences ($\Delta$) in magnetic moment at 10 K between zero-field-cooled (ZFC) and field-cooled (FC) curves are closely related to the interphase exchange interaction in these composite films. Suppression of the Curie temperature ($T_{\text{C}}$) was observed in both pure Permalloy and Ni80Fe20/NixFe1-xO composite films, and the $T_{\text{C}}$ depression was reduced by annealing.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2005-06-15

著者

• Gambino Richard

  Department Of Materials Science And Engineering Stony Brook University

• Lin Ko-Wei

  Department of Materials Engineering, National Chung Hsing University, Taichung 402, Taiwan, Republic

• Lewis Laura

  Materials Science Department, Brookhaven National Lab., Upton, NY 11973, U.S.A.

• Lin Ko-wei

  Department Of Materials Engineering National Chung Hsing University

• Lewis Laura

  Materials Science Department Brookhaven National Lab.

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• Thermal Annealing Effects on the Structural, Magnetic, and Magnetotransport Properties of NiFe/(Ni,Fe)O Bilayers
• Tuning Microstructural and Magnetic Properties of Ion-Beam-Deposited Ni80Fe20/NixFe1-xO Composite Films
• Ion-Beam Bombarded SiO2 Layer Effects on the Microstructure and Magnetism in FePt/SiO2 Bilayers
• Correlating Uncompensated Antiferromagnetic Moments and Exchange Coupling Interactions in Interface Ion-Beam Bombarded Co90Fe10/CoFe-Oxide Bilayers
• Probing Exchange Bias Effects in CoO/Co Bilayers with Pillar-Like CoO Structures
• Antiferromagnetic Layer Structure Effects on Exchange Coupling Strength in Ion-Beam Deposited Ni80Fe20/Cobalt Oxide Bilayers
• Enhanced Anisotropic Magnetoresistance of Ion-Beam-Deposited Ni80Fe20–NixFe1-xO Composite Films

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