The Magnetic and Magnetoimpedance Properties of Cobalt-Based Amorphous Ribbons with Peculiarities of Effective Magnetic Anisotropy

• Published in: Physics of metals and metallography Vol. 123; no. 8; pp. 746 - 752
• Main Authors: Pasynkova, A. A., Timofeeva, A. V., Lukshina, V. A., Stepanova, E. A., Kurlyandskaya, G. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.08.2022; Springer; Springer Nature B.V
• Subjects: Anisotropy; Annealing; Chemistry and Materials Science; Comparative analysis; Electrical and Magnetic Properties; Giant magnetoimpedance; Magnetic anisotropy; Magnetic fields; Magnetic properties; Materials Science; Metallic Materials; Rapid quenching (metallurgy); Residual stress; Ribbons; Thermomechanical treatment; amorphous magnetic ribbons; magnetic anisotropy; magnetic properties; low magnetic field detectors; magnetic impedance
• ISSN: 0031-918X; 1555-6190
• DOI: 10.1134/S0031918X22080051

The structure, magnetic, and magnetoimpedance properties of Fe 3 Co 67 Cr 3 Si 15 B 12 amorphous ribbons are studied using samples differing in the geometry, which are prepared by rapid quenching of the melt on a rotating wheel. The comparative analysis is performed for the as-quenched ribbons without additional treatments (A) and after relaxation annealing at 350°C (B) or thermomechanical treatment at 350°C under a specific load of 230 MPa (C). The selected treatments A and B correspond to the longitudinal magnetic anisotropy; in the case of annealed samples, the level of residual stresses is lower. Treatment C leads to the formation of transverse uniaxial magnetic anisotropy and record high sensitivity of giant magnetoimpedance effect (~200%/Oe) to the external magnetic field in the range of low fields ~2–3 Oe.