Abstract
Changes in the crystal structure, magnetic properties, and electrical resistivity of Fe-Co-Ni+ (4-8) at% V alloy ribbons were investigated. It was found that the fcc-bcc phase boundary in the ribbons with 8 at% V shifted toward the Fe-rich composition side by about 10% from the position for the ribbons with no V. The coercivity and saturation magnetization decreased drastically when the crystal structure changed to the fcc structure with the addition of V to the bcc Fe-Co-Ni composition. The magnetostriction of the fcc structure was smaller than that of bcc samples. The electrical resistivity increased with the addition of V.
