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Stress and field contactless sensor based on the scattering of electromagnetic waves by a single ferromagnetic microwire

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Herrero Gómez, Carlos and Aragón Sánchez, Ana María and Hernando Rydings, Manuel and Marín Palacios, María Pilar (2014) Stress and field contactless sensor based on the scattering of electromagnetic waves by a single ferromagnetic microwire. Applied physics letters, 105 (9). 092405/1-092405/4. ISSN 0003-6951

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Official URL: http://dx.doi.org/10.1063/1.4894732


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Abstract

In this paper, we report an experimental study on the microwave modulated scattering intensity for a single Fe_2.25Co_72.75Si_10B_15 amorphous metallic microwire. The modulation is driven by applying a bias magnetic field that tunes the magnetic permeability of the ferromagnetic microwire. Furthermore, by using a magnetostrictive microwire, we also demonstrate that the microwave scattering is sensitive to mechanical stresses. In fact, we present a wireless microwave controlled stress sensor, suitable for biological applications, as a possible use of this effect. In addition, a first order theoretical approximation accounts for the observed influence of the magnetic permeability on the scattering coefficients. That model leads to predictions in good agreement with the experimental results.


Item Type:Article
Additional Information:

© 2014 AIP Publishing LLC. The authors want to acknowledge the Spanish Ministry of Economy and Competitiveness for it support via the projects TSI-020100-2011-280, Consolider-Ingenio 2010 CSD2007-0010, MAT2009-14741-C02-01, and IPT-2011- 0893-420000. We also want to thank Micromag 2000, S.L., which provided the microwire samples.

Uncontrolled Keywords:Contactless sensors; Ferromagnetic microwires; Scattering of electromagnetic waves
Subjects:Sciences > Physics > Materials
ID Code:29558
Deposited On:16 Apr 2015 15:30
Last Modified:16 Apr 2015 15:30

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