A ferromagnetic specimen reaches magnetic saturation at a sufficiently large magnetising field. Further increase in H then produces relatively little additional magnetisation because:
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Question

A ferromagnetic specimen reaches magnetic saturation at a sufficiently large magnetising field. Further increase in H then produces relatively little additional magnetisation because:

G1 Physics · Accepted Answer

At magnetic saturation, domain-wall motion and domain rotation have produced nearly complete alignment of the available magnetic moments with the external field. Since there are very few additional moments left to align, increasing H further causes only a relatively small increase in magnetisation. Saturation does not mean that domains disappear or that the Curie temperature has been reached.