Detailed investigation of the GMI in a commercial soft-ferromagnetic amorphous alloy

• Published in: Journal of magnetism and magnetic materials Vol. 226; pp. 727 - 729
• Main Authors: Neto, João Cozac, Machado, F.L.A, de Biasi, R.S, de Araujo, A.E.P, de Aguiar, F.M
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-05-2001
• Subjects: Amorphous systems—ribbons; Amorphous systems—soft magnet; Ferromagnetic resonance; Giant magnetoimpedance; Ferromagnetic resonance; Giant magnetoimpedance; Amorphous systems—soft magnet; Amorphous systems—ribbons
• ISSN: 0304-8853
• DOI: 10.1016/S0304-8853(00)01151-3

An investigation of the giant magnetoimpedance effect (GMI) in pieces of a commercial alloy METGLAS 2705
M is presented. The GMI measurements were carried out in as-quenched and annealed samples. The composition
C of the samples was investigated by energy-dispersive X-ray spectrometer (EDS) and ferromagnetic resonance has been measured in the X-band (9.5
GHz). It is found that
C departs from the nominal value when the electron beam is swept from the center of the ribbon to the edge. On the other hand, while the annealing increases the GMI it decreases the FMR linewidth. Despite the inhomogeneity in the composition it was also found that the GMI is larger in wider samples.