Sensitivity Enhancement in Magnetic Sensors Based on Ferroelectric-Bimorphs and Multiferroic Composites

Simple item page
dc.contributor.authorSreenivasulu, Gollapudien
dc.contributor.authorQu, Pengen
dc.contributor.authorPetrov, Vladimir M.en
dc.contributor.authorQu, Hongweien
dc.contributor.authorSrinivasan, Gopalanen
dc.contributor.departmentMaterials Science and Engineering (MSE)en
dc.date.accessioned2017-09-20T18:25:26Zen
dc.date.available2017-09-20T18:25:26Zen
dc.date.issued2016-02-20en
dc.date.updated2017-09-20T18:25:26Zen
dc.description.abstractMultiferroic composites with ferromagnetic and ferroelectric phases have been studied in recent years for use as sensors of AC and DC magnetic fields. Their operation is based on magneto-electric (ME) coupling between the electric and magnetic subsystems and is mediated by mechanical strain. Such sensors for AC magnetic fields require a bias magnetic field to achieve pT-sensitivity. Novel magnetic sensors with a permanent magnet proof mass, either on a ferroelectric bimorph or a ferromagnetic-ferroelectric composite, are discussed. In both types, the interaction between the applied AC magnetic field and remnant magnetization of the magnet results in a mechanical strain and a voltage response in the ferroelectric. Our studies have been performed on sensors with a Nd-Fe-B permanent magnet proof mass on (i) a bimorph of oppositely-poled lead zirconate titanate (PZT) platelets and (ii) a layered multiferroic composite of PZT-Metglas-Ni. The sensors have been characterized in terms of sensitivity and equivalent magnetic noise N. Noise N in both type of sensors is on the order of 200 pT/√Hz at 1 Hz, a factor of 10 improvement compared to multiferroic sensors without a proof mass. When the AC magnetic field is applied at the bending resonance for the bimorph, the measured N ≈ 700 pT/√Hz. We discuss models based on magneto-electro-mechanical coupling at low frequency and bending resonance in the sensors and theoretical estimates of ME voltage coefficients are in very good agreement with the data.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSreenivasulu, G.; Qu, P.; Petrov, V.; Qu, H.; Srinivasan, G. Sensitivity Enhancement in Magnetic Sensors Based on Ferroelectric-Bimorphs and Multiferroic Composites. Sensors 2016, 16, 262.en
dc.identifier.doihttps://doi.org/10.3390/s16020262en
dc.identifier.urihttp://hdl.handle.net/10919/79273en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectmagnetic sensoren
dc.subjectpiezoelectricen
dc.subjectferroelectricen
dc.subjectmultiferroicen
dc.subjectbimorphen
dc.subjectbending resonanceen
dc.subjectproof massen
dc.subjectpermanent magneten
dc.titleSensitivity Enhancement in Magnetic Sensors Based on Ferroelectric-Bimorphs and Multiferroic Compositesen
dc.title.serialSensorsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
sensors-16-00262-v2.pdf
Size:
1.07 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
Name:
license.txt
Size:
1.5 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Journal Articles, Multidisciplinary Digital Publishing Institute (MDPI)
Scholarly Works, Materials Science and Engineering (MSE)