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Vertical Hall-effect devices (VHDs) are CMOS integrated sensors dedicated to the measurement of magnetic field in the plane of the chip. At low frequency, performances are severely reduced by the 1/f noise. We have recently assessed by FEM simulation the capability of the four-phase spinning current technique (SCT) to lower the 1/f noise on shallow VHD designed in low-voltage CMOS technologies (LV-VHD)...
An exploratory investigation of high sensitivity sensors based on magnonic crystals for the measurement of weak magnetic fields at room temperature is presented. The samples are YIG crystals on GGG substrate (Gadolinium-Gallium-Garnet) on which a periodic structure of shallow grooves are etched or gold stripes are deposited. The excitation of surface magnetostatic spin waves (MSSW) which should appear...
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