Structural and Magnetic Studies of the Fe-Co-Zr-Mo-W-B Amorphous Alloy

The paper presents a characterization of the phase structure by X-ray diffraction and isothermal magnetic entropy changes for the amorphous Fe58Co10Zr10Mo5W2B15 alloy sample in the as-quenched state.An ingot sample was obtained by arc-melting.The ribbon sample was obtained by the melt-spinning technique.The magnetic measurements at various temperatures allowed for the study of the Curie temperature TC and magnetic entropy changes |∆SM |.In order to determine the Curie temperature TC of amorphous phase, three independent methods were used.Determination of the Curie temperature TC for the amorphous alloys is not a trivial problem, as magnetization does not decreases rapidly around TC. Therefore it is essential issue to establish TC using few complementary methods.X-ray diffraction analysis revealed a fully amorphous structure of the ribbon samples.