Monday, June 12 2017

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Magnetic tunnel junctions (MTJs) have drawn growing interest in magnetic field sensing applications owing to their high stability and sensitivity. At low frequency, the intrinsic magnetic 1/f noise sets the ultimate limit for detecting ultralow magnetic field. To gain insight into its mechanism, the fluctuation-dissipation theorem (FDT) has been utilized, which describes the relation between magnetic 1/f noise and magnetic sensitivity product as a linear behavior.