Abstract
The glass forming ability and magnetic properties of a Co–B–Si–Nb glassy alloy have been investigated. The maximum rod diameters for the formation of a glassy phase were 1.5mm for Co70B20Si8Nb2 and 3mm for Co70B22Si6Nb4. Zero-magnetostriction bulk metallic glass samples of (Co0.952Fe0.058)70B20Si8Nb2 were prepared in cylindrical form with a diameter of 1.5mm and in ring form with a thickness of 0.5mm. The (Co0.952Fe0.058)70B20Si8Nb2 glassy alloy samples exhibited a high glass forming ability and good soft magnetic properties, i.e., a saturation magnetization of 0.6T, a low coercivity within 0.1–0.2A∕m, and a high permeability of 104 000 at a frequency of 1kHz and zero magnetostriction. The success of the synthesis of the zero-magnetostriction Co–Fe–B–Si–Nb glassy alloy with good soft magnetic properties and a high glass forming ability is promising for the future development of sensitive magnetic sensors.
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