Abstract
Measurements of magnetization, electrical resistivity, thermal expansion and differential thermal change were made on amorphous Fe 100- x B x (9 ≦ X ≦ 21) alloys prepared by rapid quenching from the liquid state. With decreasing boron content in the alloys, the Curie temperature falls remarkably, while the magnetic moment increases sluggishly. The thermal expansion curves exhibit the invar characteristics below the Curie temperature due to a large positive spontaneous volume magnetostriction, and the reduced magnetization curves decrease much more rapidly with increasing temperature than those of other ferromagnetic amorphous alloys.
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