CoPt–Al2O3 Nanocomposite Films: Synthesis, Structure, and Magnetic Properties : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1134/S102745102001022X

Ключевые слова: Alumina; Aluminum oxide; Binary alloys; Cobalt alloys; Coercive force; Ferromagnetic materials; Ferromagnetism; Magnesia; Magnetic anisotropy; Nanocomposites; Platinum alloys; Saturation magnetization; Thin films; Average size; Bi-layer; CoPt alloys; Ferromagnetic nanocomposites; Film planes; In-vacuum; Magnetization axis; Nanocomposite films, thin films; ferromagnetic nanocomposites; CoPt alloy; magnetic anisotropy

Аннотация: The structure and magnetic properties of CoPt–Al2O3 nanocomposite films synthesized by the annealing of Al/(Co3O4 + Pt) bilayers on a MgO(001) substrate at 650°C in vacuum are investigated. The synthesized composite films contain ferromagnetic CoPt grains with an average size of 25–45 nm enclosed in a nonconducting Al2O3 matrix. ThПоказать полностьюe saturation magnetization (Ms ~ 330 G) and coercivity (Hc ≈ 6 kOe) of the films are measured in the film plane and perpendicular to it. The obtained films are characterized by a spatial rotational magnetic anisotropy, which makes it possible to arbitrarily set the easy magnetization axis in the film plane or perpendicular to it using a magnetic field stronger than the coercivity (H > Hc). © 2020, Pleiades Publishing, Ltd.

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Издание

Журнал: Journal of Surface Investigation

Выпуск журнала: Vol. 14, Is. 1

Номера страниц: 47-53

ISSN журнала: 10274510

Издатель: Pleiades Publishing

Авторы

  • Zhigalov V.S. V.S. (Bykova L.E., Myagkov V.G., Pavlova A.N., Volochaev M.N., Matsynin A.A., Patrin G.S.)
  • Zhigalov V.S. (Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation)
  • Bykova L.E. (Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation)
  • Myagkov V.G. (Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation)
  • Pavlova A.N. (Siberian State University of Science and Technology, Krasnoyarsk, 660014, Russian Federation)
  • Volochaev M.N. (Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation)
  • Matsynin A.A. (Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation)
  • Patrin G.S. (Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)

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