(FeCoNi)–ZrBCu base alloys, the influence of transition metal composition and heat treatment on structure and magnetic properties

Abstract Magnetic properties of amorphous and partially crystallized (Fe : Co : Ni)86Zr7B6Cu1 alloys were investigated. Primary formation of BCC as well as FCC nanocrystals takes place at the first stage of crystallization. Low coercivities (H c A/m) and low magnetostrictions are observed only in the Fe-rich corner. Maximum value of saturation polarization J S =1.63–1.67 T are obtained in the partially crystallized (Fe : Co)86Zr7B6Cu1 alloys with 30–35 Co-parts.