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https://dspace.ctu.edu.vn/jspui/handle/123456789/55859
Title: | Application of the flux bending effect in an active flux-guide for low-noise planar vector TMR magnetic sensors |
Authors: | Luong, Van Su Nguyen, Anh Tuan Nguyen, Anh Tue Nguyen, Tuyet Nga Hoang, Quoc Khanh Nguyen, Ngoc Lan Nguyen, Tuan Anh |
Keywords: | Low-frequency noise Magnetometers Magnetic fields Modulation technique TMR |
Issue Date: | 2018 |
Series/Report no.: | Vietnam Journal of Science and Technology;Vol. 56, No. 06 .- P.714–722 |
Abstract: | A concept of a planar vector magnetic sensor comprising in-plane tunnel magnetoresistivc (TMR) sensors and an active flux-guide (AFG) was introduced in this work. The AFG redirected the magnetic flux at high-frequency benefiting a vertical detection capability and suppressing the field noise of the TMR at low-frequency measurement. The vertical sensitivity of 19.5 V/T was close to the in-plane sensitivity of 19.2 V/T. In addition, the 1-Hz field noise was suppressed from 6 nT/√Hz down to 0.4 nT/√Hz. The flux bending effect of the AFG was also verified by the angular measurements with the angular deflection was found to be about 50°. It revealed that the vertical field component was certainly detected by the in-plane sensor, and the proposed method was a feasible approach for the development of the low-noise planar vector magnetic sensor. |
URI: | https://dspace.ctu.edu.vn/jspui/handle/123456789/55859 |
ISSN: | 2525-2518 |
Appears in Collections: | Vietnam journal of science and technology |
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_file_ Restricted Access | 2.54 MB | Adobe PDF | ||
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