Angular Magnetoresistance of Nanowires with Alternating Cobalt and Nickel Segments

Handle URI:
http://hdl.handle.net/10754/625529
Title:
Angular Magnetoresistance of Nanowires with Alternating Cobalt and Nickel Segments
Authors:
Mohammed, Hanan; Corte-Leon, H.; Ivanov, Yurii P. ( 0000-0003-0271-5504 ) ; Moreno, J. A.; Kazakova, O.; Kosel, Jürgen ( 0000-0002-8998-8275 )
Abstract:
Magnetization reversal in segmented Co/Ni nanowires with varying number of segments was studied using angular Magnetoresistance (MR) measurements on isolated nanowires. The MR measurements offer an insight into the pinning of domain walls within the nanowires. Angular MR measurements were performed on nanowires with two and multiple segments by varying the angle between the applied magnetic field and nanowire (−90° ≤θ≤90°). The angular MR measurements reveal that at lower values of θ the switching fields are nearly identical for the multisegmented and two-segmented nanowires, whereas at higher values of θ, a decrease in the switching field is observed in the case of two segmented nanowires. The two segmented nanowires generally exhibit a single domain wall pinning event, whereas an increased number of pinning events are characteristic of the multisegmented nanowires at higher values of θ. In-situ magnetic force microscopy substantiates reversal by domain wall nucleation and propagation in multisegmented nanowires.
KAUST Department:
Electrical Engineering Program
Citation:
Mohammed H, Corte-Leon H, Ivanov YP, Moreno JA, Kazakova O, et al. (2017) Angular Magnetoresistance of Nanowires with Alternating Cobalt and Nickel Segments. IEEE Transactions on Magnetics: 1–1. Available: http://dx.doi.org/10.1109/TMAG.2017.2718623.
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Transactions on Magnetics
Issue Date:
22-Jun-2017
DOI:
10.1109/TMAG.2017.2718623
Type:
Article
ISSN:
0018-9464; 1941-0069
Sponsors:
This work was funded partly by King Abdullah University of Science and Technology and in part by EMRP and EMRP participating countries under Project EXL04 (SpinCal), and FP7 project NanoMag, and NanoMag (EMPIR).
Additional Links:
http://ieeexplore.ieee.org/document/7954991/
Appears in Collections:
Articles; Electrical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorMohammed, Hananen
dc.contributor.authorCorte-Leon, H.en
dc.contributor.authorIvanov, Yurii P.en
dc.contributor.authorMoreno, J. A.en
dc.contributor.authorKazakova, O.en
dc.contributor.authorKosel, Jürgenen
dc.date.accessioned2017-10-02T10:53:15Z-
dc.date.available2017-10-02T10:53:15Z-
dc.date.issued2017-06-22en
dc.identifier.citationMohammed H, Corte-Leon H, Ivanov YP, Moreno JA, Kazakova O, et al. (2017) Angular Magnetoresistance of Nanowires with Alternating Cobalt and Nickel Segments. IEEE Transactions on Magnetics: 1–1. Available: http://dx.doi.org/10.1109/TMAG.2017.2718623.en
dc.identifier.issn0018-9464en
dc.identifier.issn1941-0069en
dc.identifier.doi10.1109/TMAG.2017.2718623en
dc.identifier.urihttp://hdl.handle.net/10754/625529-
dc.description.abstractMagnetization reversal in segmented Co/Ni nanowires with varying number of segments was studied using angular Magnetoresistance (MR) measurements on isolated nanowires. The MR measurements offer an insight into the pinning of domain walls within the nanowires. Angular MR measurements were performed on nanowires with two and multiple segments by varying the angle between the applied magnetic field and nanowire (−90° ≤θ≤90°). The angular MR measurements reveal that at lower values of θ the switching fields are nearly identical for the multisegmented and two-segmented nanowires, whereas at higher values of θ, a decrease in the switching field is observed in the case of two segmented nanowires. The two segmented nanowires generally exhibit a single domain wall pinning event, whereas an increased number of pinning events are characteristic of the multisegmented nanowires at higher values of θ. In-situ magnetic force microscopy substantiates reversal by domain wall nucleation and propagation in multisegmented nanowires.en
dc.description.sponsorshipThis work was funded partly by King Abdullah University of Science and Technology and in part by EMRP and EMRP participating countries under Project EXL04 (SpinCal), and FP7 project NanoMag, and NanoMag (EMPIR).en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/document/7954991/en
dc.rights(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.en
dc.subjectAngular Magnetoresistanceen
dc.subjectCylindrical Nanowiresen
dc.subjectDomain Wall Pinningen
dc.subjectMagnetic field measurementen
dc.subjectMagnetic fieldsen
dc.subjectMagnetic Force Microscopyen
dc.subjectMagnetization reversalen
dc.subjectNanowiresen
dc.subjectNickelen
dc.subjectResistanceen
dc.subjectSwitchesen
dc.titleAngular Magnetoresistance of Nanowires with Alternating Cobalt and Nickel Segmentsen
dc.typeArticleen
dc.contributor.departmentElectrical Engineering Programen
dc.identifier.journalIEEE Transactions on Magneticsen
dc.eprint.versionPost-printen
dc.contributor.institutionNational Physical Laboratory, London, United Kingdom.en
dc.contributor.institutionSchool of Natural Sciences, Far Eastern Federal University, Vladivostok, Russia.en
dc.contributor.institutionAustrian Academy of Sciences, Erich Schmid Institute of Materials Science, Leoben , Austriaen
kaust.authorMohammed, Hananen
kaust.authorIvanov, Yurii P.en
kaust.authorMoreno, J. A.en
kaust.authorKosel, Jürgenen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.