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Compositional uniformity, domain patterning and the mechanism underlying nano-chessboard arrays

Gonzalez, Santiago; Perez-Mato, J M; Elcoro, Luis; Garcia, Alberto; Withers, Raymond; Bourgeois, Laure

Description

We propose that systems exhibiting compositional patterning at the nanoscale, so far assumed to be due to some kind of ordered phase segregation, can be understood instead in terms of coherent, single phase ordering of minority motifs, caused by some constrained drive for uniformity. The essential features of this type of arrangement can be reproduced using a superspace construction typical of uniformity-driven orderings, which only requires the knowledge of the modulation vectors observed in...[Show more]

dc.contributor.authorGonzalez, Santiago
dc.contributor.authorPerez-Mato, J M
dc.contributor.authorElcoro, Luis
dc.contributor.authorGarcia, Alberto
dc.contributor.authorWithers, Raymond
dc.contributor.authorBourgeois, Laure
dc.date.accessioned2015-12-10T23:34:31Z
dc.identifier.issn0953-8984
dc.identifier.urihttp://hdl.handle.net/1885/69457
dc.description.abstractWe propose that systems exhibiting compositional patterning at the nanoscale, so far assumed to be due to some kind of ordered phase segregation, can be understood instead in terms of coherent, single phase ordering of minority motifs, caused by some constrained drive for uniformity. The essential features of this type of arrangement can be reproduced using a superspace construction typical of uniformity-driven orderings, which only requires the knowledge of the modulation vectors observed in the diffraction patterns. The idea is discussed in terms of a simple two-dimensional lattice-gas model that simulates a binary system in which the dilution of the minority component is favoured. This simple model already exhibits a hierarchy of arrangements similar to the experimentally observed nano-chessboard and nano-diamond patterns, which are described as occupational modulated structures with two independent modulation wavevectors and simple step-like occupation modulation functions.
dc.publisherInstitute of Physics Publishing
dc.sourceJournal of Physics: Condensed Matter
dc.subjectKeywords: Binary systems; Compositional uniformity; Domain patterning; Lattice gas model; Modulated structures; Modulation functions; Modulation vectors; Nano diamond; Nano scale; Ordered phase; Single phase; Superspace; Wave vector; Condensed matter physics; Physi
dc.titleCompositional uniformity, domain patterning and the mechanism underlying nano-chessboard arrays
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume24
dc.date.issued2012
local.identifier.absfor030206 - Solid State Chemistry
local.identifier.ariespublicationf5625xPUB2027
local.type.statusPublished Version
local.contributor.affiliationGonzalez, Santiago, Universidad del Paıs Vasco
local.contributor.affiliationPerez-Mato, J M, Universidad del Pais Vasco
local.contributor.affiliationElcoro, Luis, Universidad del Pais Vasco
local.contributor.affiliationGarcia, Alberto, Institut de Ciencia de Materials de Barcelona
local.contributor.affiliationWithers, Raymond, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBourgeois, Laure, Monash University
local.description.embargo2037-12-31
local.bibliographicCitation.issue49
local.bibliographicCitation.startpage495301/1
local.bibliographicCitation.lastpage11
local.identifier.doi10.1088/0953-8984/24/49/495301
local.identifier.absseo970103 - Expanding Knowledge in the Chemical Sciences
dc.date.updated2016-02-24T08:53:07Z
local.identifier.scopusID2-s2.0-84870473414
local.identifier.thomsonID000311429600005
CollectionsANU Research Publications

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