Structural and Magnetic Studies of the Fe-Co-Zr-Mo-W-B Amorphous Alloy
K. Kotyniaa, P. Pawlik a, M. Hasiak b, M. Pruba a and K. Pawlik a
aInstitute of Physics, Częstochowa University of Technology, Częstochowa, Poland
bDepartment of Mechanics and Materials Science, Wrocław University of Science and Technology, Wrocław, Poland
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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 |ΔSM|. 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.

DOI: 10.12693/APhysPolA.131.1204
PACS numbers: 61.43.Dq, 75.50.Kj, 75.30.Sg, 75.30.Kz, 75.40.-s