Non linear but lossless ferromagnet - opracowanie

Non linear but lossless ferromagnet For larger field strengths, the behaviour of a ferromagnet is better described by the hysteresis
curve shown in Figure 5.1. In relation to that curve we take the opportunity to
define in the figure the important concepts of saturation magnetisation M0 and coercive
force Hc.
If the hysteresis loop is relatively narrow, and we are prepared to accept a rather crude
approximation, we could write
M= χm(H)H (5.14)
where χm(H) is the field-dependent non-linear magnetic susceptibility. This model
corresponds to the dielectric model of equation 5.5, and has approximately the same
relatively uninteresting uses.
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