Title :
Improvement of stepped magnetoimpedance properties by controlling demagnetizing effect
Author :
Kikuchi, H. ; Kamata, S. ; Oe, S. ; Nakai, T. ; Hashi, S. ; Ishiyama, K.
Author_Institution :
Iwate Univ., Morioka, Japan
Abstract :
The magnetoimpedance (MI) properties of the elements with a rectangle and an ellipsoidal shape have been investigated. The larger impedance jump and sharper discontinuous profile were observed in the ellipsoidal element, which is attributed to the suppression of distribution of the demagnetizing field. We also confirmed that the switching of all domain structures reflects on the abrupt impedance jumps. Our results indicate that a realization of a miniaturized novel magnetic field sensor for detection of a threshold field.
Keywords :
cobalt alloys; demagnetisation; magnetic domains; magnetic sensors; magnetic thin films; niobium alloys; thin film sensors; zirconium alloys; Co85Nb12Zr3; demagnetizing field; domain structures; ellipsoidal element; magnetic field sensor; stepped magnetoimpedance properties; threshold field detection; Amorphous magnetic materials; Demagnetization; Impedance; Magnetic domains; Perpendicular magnetic anisotropy; Shape;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157332
