Advanced Materials · 2011 · 383 citations · 14 references
EngineeringElectrical EngineeringElectromagnetismMagnetic MaterialsSensorsElectrical SensorsFerromagnetismMagnetic FieldsMagnetic SensorsNoiseSensor NoiseField SensitivityMagnetic Field SensingMagnetic Field SensorsMagnetic NoiseMagnetic Noise ReductionNoise Sources
Extremely low equivalent magnetic noise in a Metglas/piezofiber magnetoelectric (ME) magetic-field sensor, realized through a combination of a giant ME effect and a reduction in constituent internal noise sources, is demonstrated. The ME coefficient is 52 V cm−1 Oe−1 at low frequency, the 1 Hz equivalent magnetic noise is 5.1 pT Hz−1/2, and the magnetic field sensitivity is 10 nT.
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