Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65993
Title: Phase-sensitive dc magnetometer based on magnetic-electromagnetic-magnetostrictive-piezoelectric heterostructure
Authors: Zhang, M
Or, SW 
Issue Date: 2017
Source: AIP advances, 2017, v. 7, no. 5, 56642, p. 056642-1-056642-7
Abstract: A phase-sensitive dc magnetometer is developed by combining a pair of permanent magnets, an electromagnetic coil, and a magnetostrictive-piezoelectric laminate in one direction to form a four-phase magnetic-electromagnetic-magnetostrictive-piezoelectric heterostructure. The dc magnetic field sensing in the magnetometer is based on the detection of the phase difference between the off-resonance magnetoelectric voltage manipulated by the dc magnetic field to be measured and the resonance electric current referenced at zero dc magnetic field, both under a preset bias magnetic field. The theoretical and experimental results confirm a high and linear dc magnetic field sensitivity of -0.21 °/Oe over a positive and negative dc magnetic field range of ±150 Oe with a small nonlinearity of 1.7%. The magnetometer has the ability to determine dc magnetic field direction and its sensitivity is independent of zero-field resonance electric current amplitude.
Publisher: American Institute of Physics
Journal: AIP advances 
EISSN: 2158-3226
DOI: 10.1063/1.4975133
Rights: © 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The following publication M. Zhang and S. W. Or, AIP Advances 7, 056642 (2017) is available at https://dx.doi.org/10.1063/1.4975133
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