Title :
Micro-size magnetic strip for ultra high frequency carrier type magnetic field sensor
Author :
Tan, Kenji ; Yamaguchi, Masahiro ; Yamakawa, Kiyoshi ; Ouchi, Kazuhiro ; Arai, Ken-Ichi
Author_Institution :
Akita Res. Inst. of Adv. Technol., Japan
fDate :
7/1/2001 12:00:00 AM
Abstract :
Magnetic strips aimed at high-frequency carrier-type magnetic field sensors were studied by using various strip widths in a carrier frequency range of gigahertz to obtain conditions for large impedance change. The impedance change was attributed to a magnetic resonance effect. It was shown that DC magnetic field regions at which the maximum change of impedance occur for wide strip elements were closely related to the applied carrier frequencies as expected theoretically. The DC magnetic field for the maximum sensitivity decreased as strips become narrow
Keywords :
ferromagnetic resonance; giant magnetoresistance; magnetic field measurement; magnetic microwave devices; magnetic multilayers; magnetic sensors; magnetisation reversal; magnetoresistive devices; skin effect; 3 GHz; DC magnetic field regions; GMI; UHF carrier type magnetic field sensor; ferromagnetic resonance effect; large impedance change; magnetic multilayer; magnetisation reversal; maximum sensitivity; micro-size magnetic strip; skin effect; various strip widths; Frequency; Impedance; Magnetic anisotropy; Magnetic fields; Magnetic films; Magnetic resonance; Magnetic sensors; Perpendicular magnetic anisotropy; Soft magnetic materials; Strips;
Journal_Title :
Magnetics, IEEE Transactions on
