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Updated: Jul 17, 2026

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通过纳米粒子自组装交换合纳米复合材料磁铁

Hao Zeng1, Jing Li, J P Liu

  • 1IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, USA.

Nature
|December 3, 2002
PubMed
概括

研究人员使用纳米粒子自组装开发了新的交换弹磁铁. 这种方法产生了先进的永久磁铁,其能量产品比传统材料高得多.

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相关概念视频

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...