Glass formability and soft magnetic properties of bulk Y–Fe–B–Ti metals

Abstract: The Ti effect on the glass forming ability and the magnetic properties of Y–Fe–B–Ti bulk metallic glasses have been investigated. Substituting 2 and 4at.% Ti for Fe or B in Y6Fe72B22 alloy decreases the saturation magnetization (σ s) and deteriorates the glass forming ability, respectively. However, substitution of 2at.% Ti for Y in Y6Fe72B22 alloy induces larger supercooled region of 72.7°C, which not only makes the bulk glassy rod as large as 3mm in diameter, but also results in the superior soft magnetic properties of σ s =126emu/g, coercivity (H c)=0.2Oe and Curie temperature (T C)=268°C. Among all Y–Fe–B–Ti bulk amorphous rods, Y4Fe72B22Ti2 displays the best glass forming ability and also the proper soft-magnetic properties. [Copyright &y& Elsevier]