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

Abstract

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.

Magnetic Properties of the Rapidly Solidified Gd3Zr10Fe55Co10Mo5W2B15 Alloy

“…Furthermore, increase in Gd contents resulted in the increase of the Curie temperature of amorphous phase [8]. Besides, in all cases a broad | − ∆S M | peak around T C was observed [8][9][10]. Therefore the aim of the present work was to investigate the influence of further admixture of Gd on structural and magnetocaloric properties of the Gd 3 Zr 10 Fe 55 Co 10 Mo 5 W 2 B 15 alloy.…”