Optical and magneto-optical properties of as-quenched CoFeSiB amorphous ribbons

O. Zivotský; K. Hrabovská; A. Hendrych; K. Postava; L. Klimša; J. Pištora

doi:10.1117/12.817973

18 November 2008 Optical and magneto-optical properties of as-quenched CoFeSiB amorphous ribbons

O. Zivotský, K. Hrabovská, A. Hendrych, K. Postava, L. Klimša, J. Pištora

Proceedings Volume 7138, Photonics, Devices, and Systems IV; 713809 (2008) https://doi.org/10.1117/12.817973
Event: Photonics, Devices, and Systems IV, 2008, Prague, Czech Republic

Abstract

Surface optical and magneto-optical properties of as-quenched (AQ) Co₆₆Fe₄Si₁₅B₁₅ amorphous ribbons are studied using the magneto-optic vector magnetometry. Both in-plane magnetization components (longitudinal M_L and transversal M_T) detect typical uniaxial magnetic anisotropy with the easy axis close to the ribbon axis. Moreover, the total magnetization vector |M|/M_S = (M_L²)+ M_r²)^0.5/M_S indicates that coherent rotation of magnetization dominates. In the regions, where |M|/MS < 1, we observe the magnetic domains using the Kerr optical microscope. The fact that domain structure closely relates with the magnetic anisotropy is confirmed. Surface optical (refractive index) and magneto-optical (the Voight constant) properties of AQ ribbon are obtained by comparing the measured magneto-optical Kerr angles at different incident angles with the theoretical model based on the light propagation in layered anisotropic media.

Citation Download Citation

O. Zivotský, K. Hrabovská, A. Hendrych, K. Postava, L. Klimša, and J. Pištora "Optical and magneto-optical properties of as-quenched CoFeSiB amorphous ribbons", Proc. SPIE 7138, Photonics, Devices, and Systems IV, 713809 (18 November 2008); https://doi.org/10.1117/12.817973

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