Rayleigh law

（重定向自Rayleigh constant）

The Rayleigh law describes the behavior of ferromagnetic materials at low fields.

Ferromagnetic materials consist of magnetic domains. When a small external field $H$ is applied, domains parallel to the external field start to grow. In this region, domain walls are moving. They are hindered by material defects. Lord Rayleigh investigated this first and quantified the magnetization $M$ as a linear and quadratic term in the field:

单词	Rayleigh constant
释义	Rayleigh constant 英语百科 Rayleigh law （重定向自Rayleigh constant） The Rayleigh law describes the behavior of ferromagnetic materials at low fields. Ferromagnetic materials consist of magnetic domains. When a small external field $H$ is applied, domains parallel to the external field start to grow. In this region, domain walls are moving. They are hindered by material defects. Lord Rayleigh investigated this first and quantified the magnetization $M$ as a linear and quadratic term in the field:
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