Magnetisation Process of Fe61+xCo10-xY8W1B20 Bulk Amorphous Alloys

P. Sikoraa, M. Nabiałekb, K. Błochb, J. Gondrob, A.V. Sanduc, d, M.M.A.B. Abdullahd, A. Kalwika, P. Mousavie, S. Hasanie, B. Jeżb aDepartment of Technology and Automation, Faculty of Mechanical Engineering and Computer Science, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa bDepartment of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland cGheorghe Asachi Technical University of Iasi, Faculty of Materials Science and Engineering, Blvd. D. Mangeron 41, 700050, Iasi, Romania dCenter of Excellence Geopolymer & Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis, 01000 Kangar, Perlis, Malaysia eDepartment of Mining and Metallurgical Engineering, Yazd University, 89195-741, Yazd, Iran

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Generally speaking, the structure of amorphous alloys can be difficult to describe accurately. The absence of repeating arrangements of atoms within the volume of the alloy generates unique material properties, but at the same time makes it difficult to describe the structure systematically. One of the exceptions to this rule is the class of amorphous alloys that exhibit ferromagnetic properties. The structure of these alloys can be assessed, in an indirect way, using the sensitivity of the magnetisation vector to any inhomogeneities in their volume. This paper presents the results of indirect structural research in accordance with the assumptions of H. Kronmüller's theory. The Fe61+xCo10-xY8W1B20 alloys - with variable Co and Fe content- were investigated. The alloy samples were made using the injection-casting method. The structure of each of the produced materials was investigated using X-ray diffraction and by examining indirectly the course of the magnetisation process in the area known as the approach to ferromagnetic saturation. In the case of the tested alloys, it was found that the magnetisation process is related to the rotation of the magnetisation vector around linear defects.

DOI:10.12693/APhysPolA.139.582 topics: rapidly-quenched alloys, X-ray diffractometry, soft magnetic materials, injection-casting method, approach to ferromagnetic saturation