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dc.contributor.advisorShvets Igor
dc.contributor.authorSeoighe, Ciaran
dc.date.accessioned2018-12-06T13:04:46Z
dc.date.available2018-12-06T13:04:46Z
dc.date.issued2000
dc.identifier.citationCiaran Seoighe, 'Surface studies of magnetite (100)', [thesis], Trinity College (Dublin, Ireland). School of Physics, 2000, pp 253
dc.identifier.otherTHESIS 5338
dc.identifier.urihttp://hdl.handle.net/2262/85507
dc.description.abstractThe (100) surface of magnetite (Fe3 O4 ) has been studied using scanning tunneling microscopy (STM) in ultra high vacuum (UHV) with a view to establishing a test surface for spin polarised STM experiments. Two structured surface arrangements were found. The first was found to form after annealing in UHV at 970 ± 15 K for about 4 hours. This consists of cubic terraces with edges aligned along [110]. The terraces are separated by 2.0 ± 0.2 A in the z-direction. This is twice the interplanar distance for magnetite (100) and implies that the observed terraces consist of a combination of octahedral and tetrahedral planes. However, this surface state is only metastable. Further annealing for a total of approximately 22 hours causes the surface to transform into another state. This state consists o f rows running along [110] directions which rotate by 90° every 2.0 ± 0.3 A in the z-direction. They have a width of 18 to 42 A and are found to become generally narrower with increasing anneal time. The corrugation perpendicular to the direction of the rows is approximately 2.0 A leading us to invoke the term nanoterrace to describe this structure. Once formed it persists until removed by mechanical polishing.
dc.format1 volume
dc.language.isoen
dc.publisherTrinity College (Dublin, Ireland). School of Physics
dc.relation.isversionofhttp://stella.catalogue.tcd.ie/iii/encore/record/C__Rb12461676
dc.subjectPhysics, Ph.D.
dc.subjectPh.D. Trinity College Dublin
dc.titleSurface studies of magnetite (100)
dc.typethesis
dc.type.supercollectionthesis_dissertations
dc.type.supercollectionrefereed_publications
dc.type.qualificationlevelDoctoral
dc.type.qualificationnameDoctor of Philosophy (Ph.D.)
dc.rights.ecaccessrightsopenAccess
dc.format.extentpaginationpp 253
dc.description.noteTARA (Trinity’s Access to Research Archive) has a robust takedown policy. Please contact us if you have any concerns: rssadmin@tcd.ie
dc.description.notePrint thesis water damaged as a result of the Berkeley Library Podium flood 25/10/2054


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