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Updated: Jun 5, 2025

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纳米尺度成像和控制MnTe中的变磁性

O J Amin1, A Dal Din2, E Golias3

  • 1School of Physics and Astronomy, University of Nottingham, Nottingham, UK. oliver.amin@nottingham.ac.uk.

Nature
|December 11, 2024
PubMed
概括

研究人员开发了用于改变磁性的纳米尺度成像,这是具有独特磁性特性的材料状态. 这种技术可以可视化变磁状态,使新的自旋器件和凝聚物质研究成为可能.

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Ferromagnetism01:31

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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...
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