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1 Journal of Achievements in Materials and Manufacturing Engineering

1 2007

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Optimisation the magnetic properties of the (Fe1-xCox)73.5Cu1Nb3Si13.5B9(X=10;30;40) alloys

Szwieczek D., Raszka T., Olszewski J.

Journal of Achievements in Materials and Manufacturing Engineering

2007

Vol. 20, nr 1-2

31-36

Purpose: In this paper results of experience of influence a structure (amorphous and amorphous after structural relaxation) on the magnetic properties (the initial magnetic permeability mu p, the magnetic permeability mu in function magnetic field H, the coercive field Hc, the remanence Br and the saturation induction Bs) on (Fe1-xCox)73.5Cu1Nb3Si13.5B9(X=10;30;40) alloys have been presented. Design/methodology/approach: The material was obtained by the method of rapid cooling from liquid phase. The measurements of structure were made on the magnetic balance, the X-ray diffraction and the moessbauer measurements. The measurements of the magnetic properties were made on the Maxwell-Wien bridge, the fluxometr and the VSM - Vibrating Sample Magnetometer. Findings: The results allowed defining that are significant dependence between the magnetic properties and the structure of the material. Research limitations/implications: Due to the high influence of the cobalt on the magnetic properties of the material further research should be undertaken. Practical implications: The measurements of allows give information to the industry how affect on the magnetic properties of alloys by adequate the heat treatment. Originality/value: The Finemet is very attractive due to his excellent the soft magnetic properties. The problem of his application in higher temperature of application and improvement his magnetic properties have been presented.