Radiation-induced micro-structures as ground states of a Swift-Hohenberg energy functional

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dc.contributor.authorSimeone, Den_AU
dc.contributor.authorThorogood, GJen_AU
dc.contributor.authorMurphy, GLen_AU
dc.contributor.authorForestier, Aen_AU
dc.contributor.authorGarcia, Pen_AU
dc.contributor.authorLuneville, Len_AU
dc.date.accessioned2022-04-14T00:51:20Zen_AU
dc.date.available2022-04-14T00:51:20Zen_AU
dc.date.issued2019-02-08en_AU
dc.date.statistics2022-03-28en_AU
dc.description.abstractWe demonstrate that the Swift-Hohenberg functional, which is used to describe patterning observed in out of equilibrium systems such as diblock copolymers, Rayleigh-Benard convection, and thin film magnetic garnets, can be applied to radiation-induced patterns that occur in non-miscible alloys. By comparing ground states obtained from the minimization of this functional and a 2D numerical simulation performed on an irradiated AgCu material, which is the archetype of a non-miscible alloy, we show that the Swift-Hohenberg functional provides all possible patterns generated under irradiation and the solubility limits of radiation-induced precipitates in these patterns. To rationalize the formation of these radiation-induced patterns, we propose a generic “pseudophase diagram” that relies not only on the irradiation flux and temperature but also on the overall composition of the alloy. Tuning this overall composition offers the opportunity to tailor new materials with various micro-structures overcoming the limitation of the equilibrium phase diagram. © 2019 Author(s). Published under license by AIP Publishing.en_AU
dc.description.sponsorshipThis work was supported by the French initiative of basic research (CEA/RSTB) for the nuclear industry. G.L.M. thanks the support of the Australian Institute of Nuclear Science and Engineering (AINSE) and also funding from the SAAFE scholarship.en_AU
dc.identifier.articlenumber065103en_AU
dc.identifier.citationSimeone, D., Thorogood, G. J., Murphy, G. L., Forestier, A., Garcia, P., & Luneville, L. (2019). Radiation-induced micro-structures as ground states of a Swift-Hohenberg energy functional. Journal of Applied Physics, 125(6), 065103. doi10.1063/1.5072798en_AU
dc.identifier.issn1089-7550en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleJournal of Applied Physicsen_AU
dc.identifier.urihttps://doi.org/10.1063/1.5072798en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13000en_AU
dc.identifier.volume125en_AU
dc.language.isoenen_AU
dc.publisherAmerican Institute of Physics (AIP)en_AU
dc.subjectRadiation fluxen_AU
dc.subjectPhase diagramsen_AU
dc.subjectGround statesen_AU
dc.subjectCopper alloysen_AU
dc.subjectSilver alloysen_AU
dc.subjectMicrostructureen_AU
dc.subjectGround statesen_AU
dc.titleRadiation-induced micro-structures as ground states of a Swift-Hohenberg energy functionalen_AU
dc.typeJournal Articleen_AU
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