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Article: Critical challenges for picoTesla magnetic-tunnel-junction sensors

TitleCritical challenges for picoTesla magnetic-tunnel-junction sensors
Authors
KeywordsMagnetic Sensors
Magnetic-Tunnel-Junction
Picotesla
Tunneling Magnetoresistance
Issue Date2009
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/sna
Citation
Sensors And Actuators, A: Physical, 2009, v. 155 n. 2, p. 217-225 How to Cite?
AbstractThe extension of small, inexpensive, low-power, low-frequency, ultra-sensitive magnetic sensors to fields between 1 nT and 1 pT, an area currently dominated by fluxgates, optically pumped magnetometers, and SQUIDS, would be a paradigm shift for the field of magnetic sensors. The necessary elements for picoTesla magnetic-tunnel-junction (MTJ) sensors have been identified by modeling the noise characteristics. The results help identify the experimental challenges involved in the integration of these necessary elements into actual sensors, illustrate the trade-offs faced if there are losses in performance upon integration. Scanning electron microscopy with polarization analysis (SEMPA) of the pinned layer provides insights into problems and possible solutions. Issues associated with real-world applications of these sensors to ultra-low field measurements are discussed. © 2009.
Persistent Identifierhttp://hdl.handle.net/10722/155547
ISSN
2015 Impact Factor: 2.201
2015 SCImago Journal Rankings: 0.902
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorEgelhoff Jr, WFen_US
dc.contributor.authorPong, PWTen_US
dc.contributor.authorUnguris, Jen_US
dc.contributor.authorMcmichael, RDen_US
dc.contributor.authorNowak, ERen_US
dc.contributor.authorEdelstein, ASen_US
dc.contributor.authorBurnette, JEen_US
dc.contributor.authorFischer, GAen_US
dc.date.accessioned2012-08-08T08:34:02Z-
dc.date.available2012-08-08T08:34:02Z-
dc.date.issued2009en_US
dc.identifier.citationSensors And Actuators, A: Physical, 2009, v. 155 n. 2, p. 217-225en_US
dc.identifier.issn0924-4247en_US
dc.identifier.urihttp://hdl.handle.net/10722/155547-
dc.description.abstractThe extension of small, inexpensive, low-power, low-frequency, ultra-sensitive magnetic sensors to fields between 1 nT and 1 pT, an area currently dominated by fluxgates, optically pumped magnetometers, and SQUIDS, would be a paradigm shift for the field of magnetic sensors. The necessary elements for picoTesla magnetic-tunnel-junction (MTJ) sensors have been identified by modeling the noise characteristics. The results help identify the experimental challenges involved in the integration of these necessary elements into actual sensors, illustrate the trade-offs faced if there are losses in performance upon integration. Scanning electron microscopy with polarization analysis (SEMPA) of the pinned layer provides insights into problems and possible solutions. Issues associated with real-world applications of these sensors to ultra-low field measurements are discussed. © 2009.en_US
dc.languageengen_US
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/snaen_US
dc.relation.ispartofSensors and Actuators, A: Physicalen_US
dc.subjectMagnetic Sensorsen_US
dc.subjectMagnetic-Tunnel-Junctionen_US
dc.subjectPicoteslaen_US
dc.subjectTunneling Magnetoresistanceen_US
dc.titleCritical challenges for picoTesla magnetic-tunnel-junction sensorsen_US
dc.typeArticleen_US
dc.identifier.emailPong, PWT:ppong@eee.hku.hken_US
dc.identifier.authorityPong, PWT=rp00217en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.sna.2009.08.016en_US
dc.identifier.scopuseid_2-s2.0-71749095089en_US
dc.identifier.hkuros219679-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-71749095089&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume155en_US
dc.identifier.issue2en_US
dc.identifier.spage217en_US
dc.identifier.epage225en_US
dc.identifier.isiWOS:000271924200001-
dc.publisher.placeSwitzerlanden_US
dc.identifier.scopusauthoridEgelhoff Jr, WF=7006151986en_US
dc.identifier.scopusauthoridPong, PWT=24071267900en_US
dc.identifier.scopusauthoridUnguris, J=8439967300en_US
dc.identifier.scopusauthoridMcMichael, RD=7007083420en_US
dc.identifier.scopusauthoridNowak, ER=7103283674en_US
dc.identifier.scopusauthoridEdelstein, AS=24425632300en_US
dc.identifier.scopusauthoridBurnette, JE=8586360600en_US
dc.identifier.scopusauthoridFischer, GA=13606821000en_US
dc.identifier.citeulike5724287-

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