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Remedying magnetic hysteresis and 1/f noise for magnetoresistive sensors

Lookup NU author(s): Professor Gui Yun TianORCiD


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Thermal domain hoppings cause magnetic hysteresis and 1/f resistance noise in magnetoresistive sensors, which largely degrades their response linearity and low-frequency detection ability. In this Letter, the method of constant magnetic excitation integrated with vertical motion flux modulation was proposed to remedy magnetic hysteresis and 1/f resistance noise together. As demonstrated in experiments, the response linearity of the prototype sensor is promoted by about 10 times. Its noise level is reduced to near Johnson-Nyquist noise level, and, therefore, the low-frequency detection ability is approximately enhanced with a factor of 100. (C) 2013 American Institute of Physics. []

Publication metadata

Author(s): Hu JF, Tian WG, Zhao JQ, Pan MC, Chen DX, Tian GY

Publication type: Article

Publication status: Published

Journal: Applied Physics Letters

Year: 2013

Volume: 102

Issue: 5

Print publication date: 05/02/2013

ISSN (print): 0003-6951

ISSN (electronic): 1077-3118

Publisher: American Institute of Physics


DOI: 10.1063/1.4790606


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Funder referenceFunder name
51175507National Natural Science Fund of China
20124307120012Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP)