MAGNETIC-PROPERTIES OF FE-V POWDERS PRODUCED BY MECHANICAL ALLOYING

Powders of Fe100-xVx (11 less-than-or-equal-to x less-than-or-equal-to 74) with a disordered b.c.c. structure were prepared by ball milling, using a mixture of elemental Fe and V powders and the sigma phase alloy as starting powders. The milling process was monitored by measuring changes in magnetization and X-ray diffraction spectrum. The Curie temperature for the metastable b.c.c. phase was determined over the V concentration range 11 less-than-or-equal-to x less-than-or-equal-to 53. The data in the range x less-than-or-equal-to 33 agreed well with those in the literature, whereas the data in the range 34 less-than-or-equal-to x less-than-or-equal-to 53 were obtained for the first time.