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Conference Paper: Enhanced structural and magnetic ordering of FePt/Mn-oxide bilayers by ion-beam bombardment and annealing

TitleEnhanced structural and magnetic ordering of FePt/Mn-oxide bilayers by ion-beam bombardment and annealing
Authors
KeywordsFePt
Ion-beam bombardment
Magnetic films
Phase transformation
Issue Date2011
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=20
Citation
The 2010 Asia-Pacific Data Storage Conference (APDSC'10), Hualien, Taiwan, 27-29 October 2010. In IEEE Transactions On Magnetics, 2011, v. 47 n. 3, p. 501-504 How to Cite?
AbstractStructural and magnetic properties of FePt thin films were affected strongly by capped MnO x layers prepared by ion-beam bombardment and post-annealing. As-deposited FePt/MnO x bilayer exhibited a magnetically soft fcc phase, and it turned to an ordered fct FePt phase with large coercivity (∼8 kOe) after annealing at 550°C. Increasing the %O 2/Ar in capped MnO x layer during deposition resulted in smaller ordered FePt grains separated by grain boundaries of MnO x. We found that the superlattice (001) peak is broadened considerably with larger amount of MnO x incorporated into FePt, likely due to the hindered formation of hard phase. Our results indicate that FePt/MnO x films deposited with lower %O 2/Ar, the oxygen atoms may occupy the interstitial positions in the FePt lattice to induce a local strain thus enhancing the FePt ordering. Further increased %O 2/Ar in capped MnO x layer, the excess oxygen atoms act a diffusion barrier effectively to inhibit the FePt grain growth and ordering. © 2011 IEEE.
DescriptionThis journal issue contain selected papers of APDSC'10
Poster Session - A. Magnetic Recording Technologies: PA-7
Persistent Identifierhttp://hdl.handle.net/10722/126046
ISSN
2015 Impact Factor: 1.277
2015 SCImago Journal Rankings: 0.602
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSun, ACen_HK
dc.contributor.authorHsu, HFen_HK
dc.contributor.authorWu, HJen_HK
dc.contributor.authorHsu, JHen_HK
dc.contributor.authorPong, PWTen_HK
dc.contributor.authorSuzuki, Ten_HK
dc.contributor.authorLin, KWen_HK
dc.date.accessioned2010-10-31T12:06:52Z-
dc.date.available2010-10-31T12:06:52Z-
dc.date.issued2011en_HK
dc.identifier.citationThe 2010 Asia-Pacific Data Storage Conference (APDSC'10), Hualien, Taiwan, 27-29 October 2010. In IEEE Transactions On Magnetics, 2011, v. 47 n. 3, p. 501-504en_HK
dc.identifier.issn0018-9464en_HK
dc.identifier.urihttp://hdl.handle.net/10722/126046-
dc.descriptionThis journal issue contain selected papers of APDSC'10-
dc.descriptionPoster Session - A. Magnetic Recording Technologies: PA-7-
dc.description.abstractStructural and magnetic properties of FePt thin films were affected strongly by capped MnO x layers prepared by ion-beam bombardment and post-annealing. As-deposited FePt/MnO x bilayer exhibited a magnetically soft fcc phase, and it turned to an ordered fct FePt phase with large coercivity (∼8 kOe) after annealing at 550°C. Increasing the %O 2/Ar in capped MnO x layer during deposition resulted in smaller ordered FePt grains separated by grain boundaries of MnO x. We found that the superlattice (001) peak is broadened considerably with larger amount of MnO x incorporated into FePt, likely due to the hindered formation of hard phase. Our results indicate that FePt/MnO x films deposited with lower %O 2/Ar, the oxygen atoms may occupy the interstitial positions in the FePt lattice to induce a local strain thus enhancing the FePt ordering. Further increased %O 2/Ar in capped MnO x layer, the excess oxygen atoms act a diffusion barrier effectively to inhibit the FePt grain growth and ordering. © 2011 IEEE.en_HK
dc.languageengen_HK
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=20en_HK
dc.relation.ispartofIEEE Transactions on Magneticsen_HK
dc.rightsIEEE Transactions on Magnetics. Copyright © IEEE.-
dc.rights©2010 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.subjectFePten_HK
dc.subjectIon-beam bombardmenten_HK
dc.subjectMagnetic filmsen_HK
dc.subjectPhase transformationen_HK
dc.titleEnhanced structural and magnetic ordering of FePt/Mn-oxide bilayers by ion-beam bombardment and annealingen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailPong, PWT:ppong@eee.hku.hken_HK
dc.identifier.authorityPong, PWT=rp00217en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/TMAG.2010.2099111en_HK
dc.identifier.scopuseid_2-s2.0-79952161354en_HK
dc.identifier.hkuros176324en_HK
dc.identifier.hkuros176534-
dc.identifier.hkuros191512-
dc.identifier.hkuros220400-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79952161354&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume47en_HK
dc.identifier.issue3en_HK
dc.identifier.spage501en_HK
dc.identifier.epage504en_HK
dc.identifier.isiWOS:000287861800002-
dc.publisher.placeUnited Statesen_HK
dc.description.otherThe Asia-Pacific Data Storage Conference (APDSC'10), Hualien, Taiwan, 27-29 October 2010. In IEEE Transactions On Magnetics, 2011, v. 47 n. 3, p. 501-504-
dc.identifier.scopusauthoridSun, AC=8141402400en_HK
dc.identifier.scopusauthoridHsu, HF=26537502100en_HK
dc.identifier.scopusauthoridWu, HJ=37035358200en_HK
dc.identifier.scopusauthoridHsu, JH=7402284145en_HK
dc.identifier.scopusauthoridPong, PWT=24071267900en_HK
dc.identifier.scopusauthoridSuzuki, T=8528518700en_HK
dc.identifier.scopusauthoridLin, KW=7403967959en_HK
dc.customcontrol.immutablesml 130904-

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