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Proceedings of the Japan Academy, Series B
Vol. 89 (2013) No. 2 p. 80-96

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http://doi.org/10.2183/pjab.89.80

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The author has been actively engaged in research on nanomagnetic materials for about 50 years. Nanomagnetic materials are comprised of ferromagnetic systems for which the size and shape are controlled on a nanometer scale. Typical examples are ultrafine particles, ultrathin films, multilayered films and nano-patterned films. In this article, the following four areas of the author’s studies are described.
(1) Mössbauer spectroscopic studies of nanomagnetic materials and interface magnetism.
(2) Preparation and characterization of metallic multilayers with artificial superstructures.
(3) Giant magnetoresistance (GMR) effect in magnetic multilayers.
(4) Novel properties of nanostructured ferromagnetic thin films (dots and wires).
A subject of particular interest in the author’s research was the artificially prepared multilayers consisting of metallic elements. The motivation to initiate the multilayer investigation is described and the physical properties observed in the artificial multilayers are introduced. The author’s research was initially in the field of pure physical science and gradually extended into applied science. His achievements are highly regarded not only from the fundamental point of view but also from the technological viewpoint.

(Communicated by Shun-ichi IWASAKI, M.J.A.)

Copyright © 2013 The Japan Academy

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