Mechanical properties study for new hypothetical crystalline phases of ReB2: A computational approach using density functional theory

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dc.citation.journalTitleCOMPUTATIONAL MATERIALS SCIENCE
dc.contributor.authorMarín-Suárez, M.
dc.contributor.authorVélez, M.E.
dc.contributor.authorDavid, J.
dc.contributor.authorArroyave-Franco, M.
dc.contributor.departmentUniversidad EAFIT. Departamento de Ciencias Básicas
dc.contributor.researchgroupElectromagnetismo Aplicado (Gema)spa
dc.date.accessioned2021-03-23T21:39:32Z
dc.date.available2021-03-23T21:39:32Z
dc.date.issued2016-09-01
dc.description.abstractRhenium diboride (ReB2) in its P6(3)/mmc crystalline structure, is widely known as a super-hard material, and has been studied many times using the Density Functional Theory (DFT) approach. In this work the same chemical composition was studied in three additional unreported hypothetical crystallographic phases by means of DFT with the hybrid functional approach, and the elastic constants of each phase were calculated. The elastic behavior of ReB2 was analyzed by means of elastic moduli calculations. Additionally, the velocities of the elastic waves of each phase were calculated, along with the Debye's temperatures, also elastic anisotropy is studied. Semi-empirical and empirical models of hardness were used to estimate qualitatively which phases are or are not hard. It has been determined that the elastic moduli of two out of the three hypothetical phases are desirable and the elastic waves move very slow (< 2 km/s) in one of them. These results and the analysis of the bond critical points (bcp) of each phase allow us to conclude that one of them is soft while the other two are hard. The synthesized phase of ReB(2)P6(3)/mmc was studied in order to compare and confirm the results. (C) 2016 Elsevier B.V. All rights reserved.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=3688
dc.identifier.doi10.1016/j.commatsci.2016.05.032
dc.identifier.issn09270256spa
dc.identifier.issn18790801spa
dc.identifier.otherWOS;000378516900026
dc.identifier.otherSCOPUS;2-s2.0-84973315098
dc.identifier.urihttp://hdl.handle.net/10784/27159
dc.language.isoengeng
dc.publisherElsevier
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84973315098&doi=10.1016%2fj.commatsci.2016.05.032&partnerID=40&md5=d53580b0e2f9d34f20f4bf83dc98e26c
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0927-0256
dc.sourceCOMPUTATIONAL MATERIALS SCIENCE
dc.subject.keywordDensity functional theoryeng
dc.subject.keywordRhenium diborideeng
dc.subject.keywordElasticityeng
dc.subject.keywordSuper-hard materialeng
dc.subject.keywordHardnesseng
dc.titleMechanical properties study for new hypothetical crystalline phases of ReB2: A computational approach using density functional theoryeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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