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Experimental observation of vacancy assisted martensitic transformation shift in Ni-Fe-Ga alloys

dc.contributor.authorUnzueta Solozabal, Iraultza ORCID
dc.contributor.authorAlonso de Robador Lorente, Daniel
dc.contributor.authorCesari Aliberch, Eduard
dc.contributor.authorSánchez Alarcos, Vicente
dc.contributor.authorRecarte Callado, Vicente
dc.contributor.authorPérez de Landazábal, José Ignacio
dc.contributor.authorGarcía Martínez, José Ángel
dc.contributor.authorPlazaola Muguruza, Fernando ORCID
dc.date.accessioned2023-12-13T15:22:31Z
dc.date.available2023-12-13T15:22:31Z
dc.date.issued2019-04-23
dc.identifier.citationPhysical Review Letters 122(16) : (2019) // Article ID 165701es_ES
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.urihttp://hdl.handle.net/10810/63364
dc.description.abstract[EN] Positron annihilation lifetime spectroscopy is used to experimentally demonstrate the direct relationship between vacancies and the shift of the martensitic transformation temperature in a Ni55Fe17Ga28 alloy. The evolution of vacancies assisting the ordering enables shifts of the martensitic transformation up to 50 K. Our results confirm the role that both vacancy concentration and different vacancy dynamics play in samples quenched from the L21 and B2 phases, which dictate the martensitic transformation temperature and its subsequent evolution. Finally, by electron-positron density functional calculations VNi is identified as the most probable vacancy present in Ni55Fe17Ga28. This work evidences the capability of vacancies for the fine-tuning of the martensitic transformation temperature, paving the way for defect engineering of multifunctional properties.es_ES
dc.description.sponsorshipThis work is supported for the Basque Government Grant IT-1005-16 and by the Spanish Ministry of Economy and Competitiveness under the projects MAT2015- 65165-C2-R (MINECO/FEDER), MAT2014-56116-C4- 1-R and GIC1585. I. Unzueta wants to acknowledge the Basque Government Grant PRE-2014-214.es_ES
dc.language.isoenges_ES
dc.publisherAPSes_ES
dc.relationinfo:eu-repo/grantAgreement/MINECO/MAT2015- 65165-C2-Res_ES
dc.relationinfo:eu-repo/grantAgreement/MINECO/MAT2014-56116-C4- 1-Res_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectvacancieses_ES
dc.subjectheusler alloyses_ES
dc.subjectdensity functional theoryes_ES
dc.subjectferromagnetismes_ES
dc.subjectpositron annihilation spectroscopyes_ES
dc.subjectmartensitic phase transitiones_ES
dc.titleExperimental observation of vacancy assisted martensitic transformation shift in Ni-Fe-Ga alloyses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holder© 2019 American Physical Societyes_ES
dc.relation.publisherversionhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.165701es_ES
dc.identifier.doi10.1103/PhysRevLett.122.165701
dc.departamentoesFísica aplicada Ies_ES
dc.departamentoeuFisika aplikatua Ies_ES


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