Operational Parameters for Sub-Nano Tesla Field Resolution of PHMR Sensors in Harsh Environments

dc.bibliographicCitation.firstPage6891eng
dc.bibliographicCitation.issue20eng
dc.bibliographicCitation.volume21eng
dc.contributor.authorJeon, Taehyeong
dc.contributor.authorDas, Proloy Taran
dc.contributor.authorKim, Mijin
dc.contributor.authorJeon, Changyeop
dc.contributor.authorLim, Byeonghwa
dc.contributor.authorSoldatov, Ivan
dc.contributor.authorKim, CheolGi
dc.date.accessioned2021-12-03T14:02:08Z
dc.date.available2021-12-03T14:02:08Z
dc.date.issued2021
dc.description.abstractThe resolution of planar-Hall magnetoresistive (PHMR) sensors was investigated in the frequency range from 0.5 Hz to 200 Hz in terms of its sensitivity, average noise level, and detectivity. Analysis of the sensor sensitivity and voltage noise response was performed by varying operational parameters such as sensor geometrical architectures, sensor configurations, sensing currents, and temperature. All the measurements of PHMR sensors were carried out under both constant current (CC) and constant voltage (CV) modes. In the present study, Barkhausen noise was revealed in 1/f noise component and found less significant in the PHMR sensor configuration. Under measured noise spectral density at optimized conditions, the best magnetic field detectivity was achieved better than 550 pT/√Hz at 100 Hz and close to 1.1 nT/√Hz at 10 Hz for a tri-layer multi-ring PHMR sensor in an unshielded environment. Furthermore, the promising feasibility and possible routes for further improvement of the sensor resolution are discussed.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/7632
dc.identifier.urihttps://doi.org/10.34657/6679
dc.language.isoengeng
dc.publisherBasel : MDPIeng
dc.relation.doihttps://doi.org/10.3390/s21206891
dc.relation.essn1424-8220
dc.relation.ispartofseriesSensors 21 (2021), Nr. 20eng
dc.rights.licenseCC BY 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/eng
dc.subjectfield detectivityeng
dc.subjectmagnetoresistive sensorseng
dc.subjectplanar-Hall magnetoresistanceeng
dc.subjectsensitivityeng
dc.subject.ddc620eng
dc.titleOperational Parameters for Sub-Nano Tesla Field Resolution of PHMR Sensors in Harsh Environmentseng
dc.typearticleeng
dc.typeTexteng
dcterms.bibliographicCitation.journalTitleSensorseng
tib.accessRightsopenAccesseng
wgl.contributorIFWDeng
wgl.subjectIngenieurwissenschafteneng
wgl.typeZeitschriftenartikeleng
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