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dc.contributor.authorSHVETS, IGORen
dc.contributor.authorARCA, ELISABETTAen
dc.date.accessioned2010-08-17T15:10:36Z
dc.date.available2010-08-17T15:10:36Z
dc.date.issued2008en
dc.date.submitted2008en
dc.identifier.citationDelogu, F., Arca, E., Mulas, G., Manai, G., Shvets, I., Numerical investigation of the stability of Ag-Cu nanorods and nanowires , Physical Review B, 78, 2, 2008, art. no. 024103en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/40473
dc.descriptionPUBLISHEDen
dc.description.abstractMolecular dynamics simulations have been employed to investigate thermally-induced phase separation processes in nanometer-sized Ag50 Cu50 rods and wires. In the absence of concentration gradients, the mechanism underlying the system decomposition consists of two stages. Roughly below 260 K, the thermal response is governed by the displacement of individual surface atoms. Above such temperature, phase separation proceeds via cooperative rearrangements involving also bulklike atomic species. The result is the formation of systems with an Ag-rich phase segregated at the surface. Significantly different thermal responses are obtained in the presence of concentration gradients perpendicular or parallel to the wire axis. First, the phase separation process is favored and takes place at lower temperatures. Second, an almost complete decomposition of the system in Ag- and Cu-rich domains is obtained and not the surface segregation of the Ag-rich phase. The decomposition is also accompanied by a considerable distortion of the originally regular nanowire shape.en
dc.format.extentart. no. 024103en
dc.language.isoenen
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseries78en
dc.relation.ispartofseries2en
dc.rightsYen
dc.subjectAtomic, molecular and chemical physicsen
dc.subjectNanowiresen
dc.titleNumerical investigation of the stability of Ag-Cu nanorods and nanowiresen
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/ivchvetsen
dc.identifier.rssinternalid67418en
dc.identifier.rssurihttp://dx.doi.org/10.1103/PhysRevB.78.024103en


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