Low damping resonant magnetoelectric sensors

Low damping resonant magnetoelectric sensors

The signal of magnetic sensors based on resonant cantilevers comprised of elastically coupled piezoelectric and magnetostrictive materials increases as the damping decreases. Here, we demonstrate that air damping which normally is suppressed by evacuation can also be substantially reduced by lowerin...

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Veröffentlicht in:Applied physics letters 2010-10, Vol.97 (15), p.152503-152503-3
Hauptverfasser: Greve, Henry, Woltermann, Eric, Jahns, Robert, Marauska, Stephan, Wagner, Bernhard, Knöchel, Reinhard, Wuttig, Manfred, Quandt, Eckhard
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container_end_page 152503-3
container_issue 15
container_start_page 152503
container_title Applied physics letters
container_volume 97
creator Greve, Henry
Woltermann, Eric
Jahns, Robert
Marauska, Stephan
Wagner, Bernhard
Knöchel, Reinhard
Wuttig, Manfred
Quandt, Eckhard
description The signal of magnetic sensors based on resonant cantilevers comprised of elastically coupled piezoelectric and magnetostrictive materials increases as the damping decreases. Here, we demonstrate that air damping which normally is suppressed by evacuation can also be substantially reduced by lowering the resonance frequency. We show that a Si-cantilever structured to include a seismic mass features a resonant magnetoelectric coupling coefficient of 1.8 kV/cmOe at 330 Hz in air.
doi_str_mv 10.1063/1.3497277
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title Low damping resonant magnetoelectric sensors
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