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Updated: Jul 10, 2026

Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers
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在室温下对铁磁FePt纳米粒子进行可逆光交换

Masayuki Suda1, Masaru Nakagawa, Tomokazu Iyoda

  • 1Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.

Journal of the American Chemical Society
|April 7, 2007
PubMed
概括

研究人员开发了可光切换的铁磁铁 (FePt) 纳米粒子用于数据存储. 这些材料具有室温铁磁性,可以通过光控制磁性. 这一突破推动了磁记录技术的发展.

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Ferromagnetism01:31

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...