Temperature effect on the asymmetric giant magnetoimpedance in amorphous materials

The asymmetric giant magnetoimpedance (GMI) curve has been measured under the rotating field as a function of temperature in a Co-based amorphous ribbon (Co/sub 66/Fe/sub 4/B/sub 15/Si/sub 15/). The magnetic softness in the amorphous phase is enhanced at temperature between 370 and 415 K. The bias-f...

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Veröffentlicht in:	IEEE transactions on magnetics 2002-09, Vol.38 (5), p.3084-3086
Hauptverfasser:	Rheem, Young Woo, Kim, Cheol Gi, Kim, Chong Oh, Kim, Gun Woo, Yoon, Seok Soo
Format:	Artikel
Sprache:	eng
Schlagworte:	Amorphous magnetic materials Amorphous materials Anisotropic magnetoresistance Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Giant magnetoresistance Impedance Iron Magnetic anisotropy Magnetic field measurement Magnetic properties and materials Magnetism Magnetotransport phenomena, materials for magnetotransport Perpendicular magnetic anisotropy Physics Rotation measurement Temperature
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Beschreibung
Zusammenfassung:	The asymmetric giant magnetoimpedance (GMI) curve has been measured under the rotating field as a function of temperature in a Co-based amorphous ribbon (Co/sub 66/Fe/sub 4/B/sub 15/Si/sub 15/). The magnetic softness in the amorphous phase is enhanced at temperature between 370 and 415 K. The bias-field caused by the hard magnetic phase is nearly constant up to 350 K and then rapidly decreases with temperature. The field angle of 95/spl deg/ from the ribbon axis for maximum impedance increases to 97/spl deg/ at a temperature of 440 K, indicating little change of anisotropy configurations with temperature.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/TMAG.2002.802136