Depth-profiling magnetic interfaces formed intrinsically in FePt3 by ion-beams

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dc.contributor.authorCauser, GLen_AU
dc.contributor.authorCortie, DLen_AU
dc.contributor.authorZhu, HLen_AU
dc.contributor.authorIonescu, Men_AU
dc.contributor.authorMankey, GJen_AU
dc.contributor.authorWang, XLen_AU
dc.contributor.authorKlose, Fen_AU
dc.date.accessioned2023-11-16T21:42:30Zen_AU
dc.date.available2023-11-16T21:42:30Zen_AU
dc.date.issued2018-03-07en_AU
dc.date.statistics2023-10-30en_AU
dc.description.abstractUsing ion-beams to locally modify material properties is rapidly gaining momentum as a technique of choice for the fabrication of magnetic nano-elements because the method provides the capability to nano-engineer in 3D, which is important for many future spintronic technologies. The precise definition of the resulting element shape is crucial for device functionality. In this work, the intrinsic sharpness of a magnetic interface formed by nano-machining FePt3 films using He+ irradiation is investigated. Through careful selection of the irradiating ion’s energy and fluence, ferromagnetism is locally induced into a fractional volume of a paramagnetic (PM) FePt3 film by modifying the chemical order parameter. Using a combination of magnetometry, transmission electron microscopy and polarised neutron reflectometry it is demonstrated that the interface over which the PM to ferromagnetic modulation occurs is confined to a few atomic monolayers only. Using density functional theory, the mechanism for the ion-beam induced magnetic transition is elucidated and shown to be caused by an intermixing of Fe and Pt atoms in anti-site defects above a threshold density.en_AU
dc.description.sponsorshipThis work has been supported by the Australian Government through the National Collaborative Research Infrastructure Strategy.en_AU
dc.identifier.articlenumberL19.00009en_AU
dc.identifier.citationCauser, G., Cortie, D., Zhu, H., Ionescu, M., Mankey, G., Wang, X., & Klose, F. (2018). Depth-profiling magnetic interfaces formed intrinsically in FePt 3 by ion-beams. Paper presented to the APS March Meeting 2018, Los Angeles, California, USA, 5-9 March, 2018. In Bulletin of the American Physical Society, 63, (1), L19.00009. Retrieved from: https://meetings.aps.org/Meeting/MAR18/Event/318778en_AU
dc.identifier.conferenceenddate2018-03-09en_AU
dc.identifier.conferencenameAPS March Meeting 2018en_AU
dc.identifier.conferenceplaceLos Angeles, California, USAen_AU
dc.identifier.conferencestartdate2018-03-05en_AU
dc.identifier.issn0003-0503en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleBulletin of the American Physical Societyen_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15195en_AU
dc.identifier.volume63en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.relation.urihttps://meetings.aps.org/Meeting/MAR18/Event/318778en_AU
dc.subjectIon beamsen_AU
dc.subjectMagnetismen_AU
dc.subjectInterfacesen_AU
dc.subjectMaterialsen_AU
dc.subjectThin Filmsen_AU
dc.subjectIrradiationen_AU
dc.subjectFerromagnetismen_AU
dc.subjectTransmission electron microscopyen_AU
dc.subjectNeutron reflectorsen_AU
dc.titleDepth-profiling magnetic interfaces formed intrinsically in FePt3 by ion-beamsen_AU
dc.typeConference Abstracten_AU
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