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Conference Paper: Angular dependence of low-frequency noise in Al2O3 -based magnetic tunnel junction sensors with conetic alloy

TitleAngular dependence of low-frequency noise in Al2O3 -based magnetic tunnel junction sensors with conetic alloy
Authors
KeywordsConetic
Low-frequency noise
Magnetic sensors
Magnetic tunnel junction (MTJ)
Angular dependence
Issue Date2012
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=20
Citation
The IEEE International Magnetics Conference (INTERMAG 2012), Vancouver, BC., 7-11 May 2012. In IEEE Transactions on Magnetics, 2012, v. 48 n. 11, p. 3712-3714 How to Cite?
AbstractWe demonstrated the noise performances of Al 2O 3-based magnetic tunnel junction sensors (MTJs) in the low-frequency regimes. Conetic alloy Ni 77Fe 14 Cu 5Mo 4 was deposited as both the MTJ pinned layer and free layer because of its superb magnetically soft properties. A rotating magnetic field was employed to investigate the angular dependence of the MTJ low-frequency noise. Hooge parameter was applied for parameterizing the low-frequency noise. The measurement results demonstrate that the Hooge parameters are angular-dependent and they exhibit a linear relation with respect to the angular magnetoresistive susceptibility. It can be also observed that the Hooge parameters possess a higher value when the Conetic MTJs are in the region of antiparallel state. These results indicate that the magnetic fluctuations in the ferromagnetic layers contribute to the low-frequency noise level in Conetic MTJ sensors. © 2012 IEEE.
DescriptionThis journal issue contains selected papers from the 2012 International Magnetics (INTERMAG) Conference
Persistent Identifierhttp://hdl.handle.net/10722/165289
ISSN
2015 Impact Factor: 1.277
2015 SCImago Journal Rankings: 0.602
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLei, Zen_US
dc.contributor.authorZeng, Ten_US
dc.contributor.authorFeng, Gen_US
dc.contributor.authorChen, PJen_US
dc.contributor.authorLai, PTen_US
dc.contributor.authorPong, PWT-
dc.date.accessioned2012-09-20T08:16:43Z-
dc.date.available2012-09-20T08:16:43Z-
dc.date.issued2012en_US
dc.identifier.citationThe IEEE International Magnetics Conference (INTERMAG 2012), Vancouver, BC., 7-11 May 2012. In IEEE Transactions on Magnetics, 2012, v. 48 n. 11, p. 3712-3714en_US
dc.identifier.issn0018-9464-
dc.identifier.urihttp://hdl.handle.net/10722/165289-
dc.descriptionThis journal issue contains selected papers from the 2012 International Magnetics (INTERMAG) Conference-
dc.description.abstractWe demonstrated the noise performances of Al 2O 3-based magnetic tunnel junction sensors (MTJs) in the low-frequency regimes. Conetic alloy Ni 77Fe 14 Cu 5Mo 4 was deposited as both the MTJ pinned layer and free layer because of its superb magnetically soft properties. A rotating magnetic field was employed to investigate the angular dependence of the MTJ low-frequency noise. Hooge parameter was applied for parameterizing the low-frequency noise. The measurement results demonstrate that the Hooge parameters are angular-dependent and they exhibit a linear relation with respect to the angular magnetoresistive susceptibility. It can be also observed that the Hooge parameters possess a higher value when the Conetic MTJs are in the region of antiparallel state. These results indicate that the magnetic fluctuations in the ferromagnetic layers contribute to the low-frequency noise level in Conetic MTJ sensors. © 2012 IEEE.-
dc.languageengen_US
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=20-
dc.relation.ispartofIEEE Transactions on Magneticsen_US
dc.rightsIEEE Transactions on Magnetics. Copyright © IEEE.-
dc.rights©2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectConetic-
dc.subjectLow-frequency noise-
dc.subjectMagnetic sensors-
dc.subjectMagnetic tunnel junction (MTJ)-
dc.subjectAngular dependence-
dc.titleAngular dependence of low-frequency noise in Al2O3 -based magnetic tunnel junction sensors with conetic alloyen_US
dc.typeConference_Paperen_US
dc.identifier.emailLei, Z: leizq@hku.hken_US
dc.identifier.emailZeng, T: tuizeng@hku.hken_US
dc.identifier.emailLai, PT: laip@eee.hku.hk-
dc.identifier.emailPong, PWT: ppong@hkucc.hku.hk-
dc.identifier.authorityLai, PT=rp00130en_US
dc.identifier.authorityPong, PWT=rp00217en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/TMAG.2012.2196688-
dc.identifier.scopuseid_2-s2.0-84867764904-
dc.identifier.hkuros209748en_US
dc.identifier.hkuros219684-
dc.identifier.volume48-
dc.identifier.issue11-
dc.identifier.spage3712en_US
dc.identifier.epage3714en_US
dc.identifier.isiWOS:000310194400251-
dc.publisher.placeUnited States-
dc.description.otherThe IEEE International Magnetics Conference (INTERMAG 2012), Vancouver, BC., 7-11 May 2012. In IEEE Transactions on Magnetics, 2012, v. 48 n. 11, p. 3712-3714-

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