Dresden 2014 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 9: Functional Materials II - Oxides and Alloys

MM 9.4: Talk

Monday, March 31, 2014, 12:30–12:45, IFW A

Electrical and magnetic properties of Fe-based bulk metallic glass with minor Co and Ni addition — •Hyo Yun Jung — IFW Dresden, Institute for Complex Materials, D-01069 Dresden, Germany

Effect of minor Co and Ni alloying on soft magnetic properties and electrical resistivity (ρ) of Fe75.5C7.0Si3.3B5.5P8.7 (at.%) bulk metallic glass (BMG) has been investigated. Within examined compositional range (Co and Ni up to 4 at.%), the saturation magnetization (Ms) and ρ of the alloy continuously decrease with increasing Co and Ni contents, while the Curie temperature (Tc) and initial permeability of the alloy increase. Comparing the effect of Co and Ni additions, the alloys with Co addition have much higher Tc and Ms than the alloy with Ni addition. The present results suggest that minor addition of Co can provide better effectiveness to enhance the magnetic softness of Fe-based BMGs than minor Ni addition.