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Updated: Jul 27, 2026

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形成具有高强制性的FePt纳米粒子

Ryan D Rutledge1, William H Morris, Matthew S Wellons

  • 1Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA.

Journal of the American Chemical Society
|November 2, 2006
PubMed
概括

-铁集群复合物的超声波产生小的铁- (FePt) 纳米粒子. 在775°C的温度下对这些纳米颗粒进行火,可以产生具有特殊强迫性的高磁性FePt纳米晶体.

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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...