STUDY OF DOMAIN STRUCTURE BY MAGNETO-OPTICAL METHODS

Oliver Váhovský – Rastislav Varga

   We have focused on study of domain structure of amorphous glass-coated microwires of composition Fe_77.5Si_7.5B₁₅ ap-plying magneto-optical Kerr effect. Initially, an experimental setup including specimen holders was designed and built. Afterwards, the reversal of longitudinal and transversal component of surface magnetization was studied. A measurement consisted of two phases - firstly, the magnetization reversal in different places along the wire showed that surface magnetization is inclined from the axial direction. Secondly, by rotating the wire in an alternating magnetic field and using MOKE, it was found that magnetization is rotated out of the wire's axis by approximately 10°.

Keywords: magneto-optics, microwires, direction of magnetization

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