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High frequency magnetic field detection by UHF carrier type thin film sensor

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3 Author(s)
Tan, K. ; Akita Res. Inst. of Adv. Technol., Japan ; Yamaguchi, M. ; Yamakawa, K.

The detection of high frequency field up to 1 GHz by the use of a new sensor element, used for highly sensitive giant magneto-impedance sensors, was discussed. This element, prepared in a magnetic multilayer like structure functions to decrease the optimum bias field. The Ta[/NiFe/Cu]66/NiFe/Ta multilayer was deposited by RF sputtering with a total thickness of 1010 nm. Results show that the bias field was only one tenth of the theoretical resonance field of conventional high frequency carrier type sensors, a value that is sufficiently low for practical use.

Published in:

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Date of Conference:

4-8 April 2005