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Formation of an r8-Dominant Si Material

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Wong, Sherman; Haberl, Bianca; Johnson, Brett; Mujica Fernaud, Andres; Guthrie, M.; McCallum, Jeffrey C.; Williams, James; Bradby, Jodie

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The rhombohedral phase of Si (r8-Si), a promising semiconducting material, is formed by indentation together with the body-centered cubic phase (bc8-Si). Using a novel sample preparation method, x-ray diffraction is used to determine the relative volume of these phases in indented Si and allow observation of a distorted unit cell along the direction of indentation loading. Theoretical calculations together with these observations suggest the indent contains an intrinsic compression of ∼4  GPa...[Show more]

dc.contributor.authorWong, Sherman
dc.contributor.authorHaberl, Bianca
dc.contributor.authorJohnson, Brett
dc.contributor.authorMujica Fernaud, Andres
dc.contributor.authorGuthrie, M.
dc.contributor.authorMcCallum, Jeffrey C.
dc.contributor.authorWilliams, James
dc.contributor.authorBradby, Jodie
dc.date.accessioned2020-02-06T23:44:29Z
dc.date.available2020-02-06T23:44:29Z
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/1885/201512
dc.description.abstractThe rhombohedral phase of Si (r8-Si), a promising semiconducting material, is formed by indentation together with the body-centered cubic phase (bc8-Si). Using a novel sample preparation method, x-ray diffraction is used to determine the relative volume of these phases in indented Si and allow observation of a distorted unit cell along the direction of indentation loading. Theoretical calculations together with these observations suggest the indent contains an intrinsic compression of ∼4  GPa that stabilizes the r8 phase.
dc.description.sponsorshipWe would like to acknowledge and thank Beamline Scientist Ruqing Xu for his help in obtaining the X-ray data. J. E. B. would like to acknowledge the Australian Research Council (ARC) (FT130101355). B. H. gratefully acknowledges funding through a Weinberg Fellowship sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy and ORNL’s Neutron Facilities, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. A. M. acknowledges support from MINECO Project No. MAT2016-75586-C4-3-P (Spain).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Physical Society
dc.rights© 2019 American Physical Society
dc.sourcePhysical Review Letters
dc.titleFormation of an r8-Dominant Si Material
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume122
dc.date.issued2019
local.identifier.absfor020406 - Surfaces and Structural Properties of Condensed Matter
local.identifier.ariespublicationu3102795xPUB1114
local.publisher.urlhttps://www.aps.org/
local.type.statusPublished Version
local.contributor.affiliationWong, Sherman, College of Science, ANU
local.contributor.affiliationHaberl, Bianca, Oak Ridge National Laboratory
local.contributor.affiliationJohnson, Brett, University of Melbourne
local.contributor.affiliationMujica Fernaud, Andres, Universidad de La Laguna (Spain)
local.contributor.affiliationGuthrie, M., University of Edinburgh
local.contributor.affiliationMcCallum, Jeffrey C, University of Melbourne
local.contributor.affiliationWilliams, James, College of Science, ANU
local.contributor.affiliationBradby, Jodie, College of Science, ANU
dc.relationhttp://purl.org/au-research/grants/arc/FT130101355
local.bibliographicCitation.issue10
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage6
local.identifier.doi10.1103/PhysRevLett.122.105701
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-11-25T07:29:26Z
local.identifier.scopusID2-s2.0-85062953838
dcterms.accessRightsOpen Access
dc.provenancehttp://sherpa.ac.uk/romeo/issn/0031-9007/..."author can archive publisher's version/PDF" from SHERPA/RoMEO site (as at 7/02/2020).
CollectionsANU Research Publications

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