Stress reconfigurable tunable magnetoelectric resonators as magnetic sensors
We report a magnetoelastic effect in doubly clamped ferromagnetic magnetostrictive Metglas resonators with electrically and magnetically reconfigurable frequency response. The field-induced resonance frequency shift is due to magnetostrictive strain, which is shown to have a strong dependence on uni...
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Veröffentlicht in: | Applied physics letters 2013-01, Vol.102 (4) |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We report a magnetoelastic effect in doubly clamped ferromagnetic magnetostrictive Metglas resonators with electrically and magnetically reconfigurable frequency response. The field-induced resonance frequency shift is due to magnetostrictive strain, which is shown to have a strong dependence on uniaxial stress. Here, we demonstrate that this magnetic field induced behavior can be used as the basis for a simple, tunable, magnetoelectric magnetic field sensor. The effect of tension on the field dependent magnetostrictive constant and the sensor sensitivity is examined, and the equivalent magnetic noise floor of such a sensor is estimated. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.4789500 |