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- W2022169407 abstract "We report a field sensor, which senses the external field by detecting the change of frequency component in the modulated GMR output. The proposed sensor works in a closed-loop mode with negative feedback and the free-layer magnetization is modulated by an alternative field H ac (2.3 Oe). The sensor output ( V out ) is proportional to the applied external field ( H ex ) in the range from −1.5 to +1.5 Oe. V out is determined only by the feedback current, and has no direct relationship with the magnetoresistance ratio or the gains of the amplifiers. The proposed sensor exhibits a much lower temperature drift (about 1/50) compared with a typical magnetization rotation-type sensor and a further reduction in the drift can be achieved by improving the signal acquisition circuit; thus it can be used for high-precision dc field detection without any additional temperature compensation." @default.
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- W2022169407 date "2011-05-18" @default.
- W2022169407 modified "2023-09-23" @default.
- W2022169407 title "Low-drift giant magnetoresistive field sensor using modulation of free-layer magnetization direction" @default.
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- W2022169407 doi "https://doi.org/10.1088/0022-3727/44/23/235003" @default.
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