Microstructures of Ta-Inserted SmCo₅/Fe Nanocomposite Thick Film Magnets

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  • Itakura Masaru
    Department of Engineering Sciences for Electronics and Materials, Faculty of Engineering Sciences, Kyushu University
  • Murayama Shin-ichi
    Department of Engineering Sciences for Electronics and Materials, Faculty of Engineering Sciences, Kyushu University
  • Mitsuhara Masatoshi
    Department of Engineering Sciences for Electronics and Materials, Faculty of Engineering Sciences, Kyushu University
  • Nishida Minoru
    Department of Engineering Sciences for Electronics and Materials, Faculty of Engineering Sciences, Kyushu University
  • Koga Hiroaki
    Department of Electrical and Electronics Engineering, Faculty of Engineering, Nagasaki University
  • Nakano Masaki
    Department of Electrical and Electronics Engineering, Faculty of Engineering, Nagasaki University
  • Fukunaga Hirotoshi
    Department of Electrical and Electronics Engineering, Faculty of Engineering, Nagasaki University

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タイトル別名
  • Microstructures of Ta-Inserted SmCo<sub>5</sub>/Fe Nanocomposite Thick Film Magnets

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抄録

<p>Ta-inserted SmCo5/Fe nanocomposite thick film magnets were synthesized by high-speed pulsed laser deposition followed by pulse annealing. The microstructures of the film magnets were characterized by high-resolution scanning electron microscopy and scanning transmission electron microscopy. The as-deposited thick film possessed a multilayered Sm-Co/Ta/α-Fe/Ta structure with amorphous Sm-Co layers and [110]-oriented crystalline α-Fe layers. After pulse annealing, many fine grains of Laves phase TaCo2 were formed, and then the multilayered structure was converted to a granular nanocomposite thick film magnet composed of fine crystalline grains of Sm(Co, Fe)5, α-(Fe, Co), and TaCo2. The volume fractions and grain sizes of hard magnetic Sm(Co, Fe)5, soft magnetic α-(Fe, Co), and TaCo2 were controlled by the thicknesses of the Ta layer, producing a nanocomposite thick film magnet with good exchange coupling.</p>

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 58 (10), 1351-1355, 2017

    公益社団法人 日本金属学会

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