The volume magnetic susceptibility of a substance (or the volume susceptibility of a substance) is expressed by κ, which is an important magnetic coefficient related to the nature of a substance. It is a physical quantity indicating how easily a substance is magnetized. The larger the value of k, the easier the substance is. It is magnetized. For most substances (such as weak magnetic substances), κ is a constant, and only a few substances (such as ferromagnetic substances) κ is not a constant. κ is expressed by the formula as follows
Â
κ= | M |
H |
Where M—magnetization, ampere/meter;
H—The magnetic field strength of the magnetization field of matter.
The ratio of the volume susceptibility of a substance to its own density is called the mass susceptibility of a substance (or the specific magnetic susceptibility of a substance), ie
Â
χ= | κ |
δ |
The density of δ-substance in the formula, kg / m 3 .
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