Abstract
Amorphous samples of Fe 100− x B x ( x=18, 24, 27.4) and crystalline samples of Fe 100− x B x ( x=2.2, 10.6) have be en prepared by electroless plating. Their magnetic properties have been studied. The Curie temperature T C increases upon increasing the boron concentration for the amorphous alloys from 613 K ( x=18) to 776 K ( x=27.4). However, the saturation magnetization and magnetic moment decrease with increasing boron concentration for both the crystalline and amorphous alloys. The data have been analyzed and discussed using the molecular-field theory and the rigid-band theory and the charge transfer of sp electrons from the metalloids to the d-band of the transition metals. The dependence of the magnetic properties of the amorphous alloys on heat treatment has also been studied.
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