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Updated: May 2, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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皮科特斯拉-灵敏度微腔光学机械磁力测量

Zhi-Gang Hu1,2, Yi-Meng Gao1,2, Jian-Fei Liu1,2

  • 1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.

Light, science & applications
|September 28, 2024
PubMed
概括

这项研究引入了使用FeGaB薄膜的新型微腔光机磁计 (MCOM),实现了前所未有的磁场传感灵敏度. 开发的设备提供了两个数量级的改进,可以在没有偏差磁场的情况下进行精确的测量.

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Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
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