Show simple item record

dc.contributor.authorCaneva, Sen
dc.contributor.authorMartin, MBen
dc.contributor.authorD'Arsié, Len
dc.contributor.authorAria, Indraten
dc.contributor.authorSezen, Hen
dc.contributor.authorAmati, Men
dc.contributor.authorGregoratti, Len
dc.contributor.authorSugime, Hen
dc.contributor.authorEsconjauregui, CSen
dc.contributor.authorRobertson, Johnen
dc.contributor.authorHofmann, Stephanen
dc.contributor.authorWeatherup, Roberten
dc.date.accessioned2017-10-03T11:07:02Z
dc.date.available2017-10-03T11:07:02Z
dc.date.issued2017-09-06en
dc.identifier.issn1944-8244
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/267682
dc.description.abstractWe investigate the interfacial chemistry between Fe catalyst foils and monolayer hexagonal boron nitride (h-BN) following chemical vapour deposition and during subsequent atmospheric exposure, using scanning electron microscopy, X-ray photoemission spectroscopy, and scanning photoelectron microscopy. We show that regions of the Fe surface covered by h-BN remain in a reduced state during exposure to moist air for ~40 hours at room temperature. This protection is attributed to the strong interfacial interaction between h-BN and Fe, which prevents the rapid intercalation of oxidizing species. Local Fe oxidation is observed on bare Fe regions and close to defects in the h-BN film (e.g. domain boundaries, wrinkles, and edges), which over the longer-term provide pathways for slow bulk oxidation of the Fe. We further confirm that the interface between h-BN and reduced Fe can be recovered by vacuum annealing at ~600 °C, although this is accompanied by the creation of defects within the h-BN film. We discuss the importance of these findings in the context of integrated manufacturing and transfer-free device integration of h-BN, particularly for technologically important applications where h-BN has potential as a tunnel barrier such as magnetic tunnel junctions.
dc.description.sponsorshipS.C. and L.D. acknowledge EPSRC Doctoral Training Awards. H.S. acknowledges a research fellowship from the Japanese Society for the Promotion of Science (JSPS). S.H. acknowledges funding from ERC grant InsituNANO (no. 279342). This research was partially supported by the EUFP7 Work Programme under grant GRAFOL (project reference 285275) and EPSRC under grant GRAPHTED (project reference EP/ ACS Applied Materials & Interfaces Research Article K016636/1). R.S.W. acknowledges a Research Fellowship from St. John’s College, Cambridge, and a Marie Skłodowska-Curie Individual Fellowship (Global) under grant ARTIST (no. 656870) from the European Union’s Horizon 2020 research and innovation programme.
dc.publisherAmerican Chemical Society
dc.subjecthexagonal boron nitride (h-BN)en
dc.subjectiron (Fe)en
dc.subjectinterfacial chemistryen
dc.subjectX-ray photoelectron spectroscopy (XPS)en
dc.subjectchemical vapor deposition (CVD)en
dc.titleFrom Growth Surface to Device Interface: Preserving Metallic Fe under Monolayer Hexagonal Boron Nitrideen
dc.typeArticle
prism.endingPage29981
prism.issueIdentifier35en
prism.publicationDate2017en
prism.publicationNameACS applied materials & interfacesen
prism.startingPage29973
prism.volume9en
dc.identifier.doi10.17863/CAM.12417
dcterms.dateAccepted2017-08-07en
rioxxterms.versionofrecord10.1021/acsami.7b08717en
rioxxterms.versionAM*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-09-06en
dc.contributor.orcidAria, Indrat [0000-0002-6305-3906]
dc.contributor.orcidHofmann, Stephan [0000-0001-6375-1459]
dc.contributor.orcidWeatherup, Robert [0000-0002-3993-9045]
dc.identifier.eissn1944-8252
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/P005152/1)
pubs.funder-project-idEuropean Commission (285275)
pubs.funder-project-idEuropean Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (656870)
pubs.funder-project-idEPSRC (EP/K016636/1)
pubs.funder-project-idEuropean Research Council (279342)
cam.issuedOnline2017-08-07en
rioxxterms.freetoread.startdate2018-08-07


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record