Unipolar and Bipolar High-Magnetic-Field Sensors Based on Surface Acoustic Wave Resonators - Université de Lorraine Access content directly
Journal Articles Physical Review Applied Year : 2017

Unipolar and Bipolar High-Magnetic-Field Sensors Based on Surface Acoustic Wave Resonators

K. Dumesnil
D. Lacour
H. Mjahed
  • Function : Author
S. Petit-Watelot
H. Mishra
  • Function : Author
S. Hage-Ali
O. Elmazria
Michel Hehn

Abstract

While surface acoustic wave (SAW) sensors have been used to measure temperature, pressure, strains, and low magnetic fields, the capability to measure bipolar fields and high fields is lacking. In this paper, we report magnetic surface acoustic wave sensors that consist of interdigital transducers made of a single magnetostrictive material, either Ni or TbFe 2 , or based on exchange-biased (Co=IrMn) multilayers. By controlling the ferromagnet magnetic properties, high-field sensors can be obtained with unipolar or bipolar responses. The issue of hysteretic response of the ferromagnetic material is especially addressed, and the control of the magnetic properties ensures the reversible behavior in the SAW response.
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Dates and versions

hal-01686932 , version 1 (17-01-2018)

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V. Polewczyk, K. Dumesnil, D. Lacour, M. Moutaouekkil, H. Mjahed, et al.. Unipolar and Bipolar High-Magnetic-Field Sensors Based on Surface Acoustic Wave Resonators. Physical Review Applied, 2017, 8 (2), ⟨10.1103/PhysRevApplied.8.024001⟩. ⟨hal-01686932⟩
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