Magnetic Properties of Spinel Ferrite Thin Films Grown by Reactive Sputtering

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  • Yanagihara Hideto
    Department of Applied Physics, University of Tsukuba
  • Sharmin Sonia
    Department of Applied Physics, University of Tsukuba
  • Niizeki Tomohiko
    Department of Applied Physics, University of Tsukuba WPI Advanced Institute for Materials Research, Tohoku University
  • Kita Eiji
    Department of Applied Physics, University of Tsukuba

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Abstract

We report the crystal structure and magnetic properties of spinel ferrite thin films of magnetite, maghemite, and cobalt ferrite grown by reactive magnetron sputtering. The magnetic properties of spinel ferrite films, in particular saturation magnetization, are affected by the growth conditions, even when no significant difference is found in the crystal structures. Comparing films grown by molecular beam epitaxy with those produced by reactive magnetron sputtering, we found that the latter technique produces larger saturation magnetization than the bulk. Therefore, sputtering can be considered the suitable method for preparing various spinel ferrite compounds.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 57 (6), 777-780, 2016

    The Japan Institute of Metals and Materials

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