Phonon softening in Ni-Mn-Ga alloys

The TA2 phonon dispersion curves of Ni-Mn-Ga alloys with different compositions which transform to different martensitic structures have been measured over a broad temperature range covering both paramagnetic and ferromagnetic phases. The branches show an anomaly (dip) at a wave number that depends...

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Detalles Bibliográficos
Autores: Mañosa, Lluís, Planes Vila, Antoni, Zarestky, Jerel L., Lograsso, T. A., Schlagel, D. L., Stassis, C.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2001
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/10500
Acceso en línea:https://hdl.handle.net/2445/10500
Access Level:acceso abierto
Palabra clave:Dispersió (Física nuclear)
Fonons
Aliatges
Scattering (Physics)
Phonons
Alloys
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spelling Phonon softening in Ni-Mn-Ga alloysMañosa, LluísPlanes Vila, AntoniZarestky, Jerel L.Lograsso, T. A.Schlagel, D. L.Stassis, C.Dispersió (Física nuclear)FononsAliatgesScattering (Physics)PhononsAlloysThe TA2 phonon dispersion curves of Ni-Mn-Ga alloys with different compositions which transform to different martensitic structures have been measured over a broad temperature range covering both paramagnetic and ferromagnetic phases. The branches show an anomaly (dip) at a wave number that depends on the particular martensitic structure, and there is softening of these anomalous phonons with decreasing temperature. This softening is enhanced below the Curie point, as a consequence of spin-phonon coupling. This effect is stronger for systems with higher electronic concentration.The American Physical Society200920092001info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion6 p.application/pdfhttps://hdl.handle.net/2445/10500Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.64.024305Physical Review B, 2001, vol. 64, núm. 2, p. 024305(1)-024305(6)http://dx.doi.org/10.1103/PhysRevB.64.024305(c) The American Physical Society, 2001info:eu-repo/semantics/openAccessoai:recercat.cat:2445/105002026-05-29T05:05:01Z
dc.title.none.fl_str_mv Phonon softening in Ni-Mn-Ga alloys
title Phonon softening in Ni-Mn-Ga alloys
spellingShingle Phonon softening in Ni-Mn-Ga alloys
Mañosa, Lluís
Dispersió (Física nuclear)
Fonons
Aliatges
Scattering (Physics)
Phonons
Alloys
title_short Phonon softening in Ni-Mn-Ga alloys
title_full Phonon softening in Ni-Mn-Ga alloys
title_fullStr Phonon softening in Ni-Mn-Ga alloys
title_full_unstemmed Phonon softening in Ni-Mn-Ga alloys
title_sort Phonon softening in Ni-Mn-Ga alloys
dc.creator.none.fl_str_mv Mañosa, Lluís
Planes Vila, Antoni
Zarestky, Jerel L.
Lograsso, T. A.
Schlagel, D. L.
Stassis, C.
author Mañosa, Lluís
author_facet Mañosa, Lluís
Planes Vila, Antoni
Zarestky, Jerel L.
Lograsso, T. A.
Schlagel, D. L.
Stassis, C.
author_role author
author2 Planes Vila, Antoni
Zarestky, Jerel L.
Lograsso, T. A.
Schlagel, D. L.
Stassis, C.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Dispersió (Física nuclear)
Fonons
Aliatges
Scattering (Physics)
Phonons
Alloys
topic Dispersió (Física nuclear)
Fonons
Aliatges
Scattering (Physics)
Phonons
Alloys
description The TA2 phonon dispersion curves of Ni-Mn-Ga alloys with different compositions which transform to different martensitic structures have been measured over a broad temperature range covering both paramagnetic and ferromagnetic phases. The branches show an anomaly (dip) at a wave number that depends on the particular martensitic structure, and there is softening of these anomalous phonons with decreasing temperature. This softening is enhanced below the Curie point, as a consequence of spin-phonon coupling. This effect is stronger for systems with higher electronic concentration.
publishDate 2001
dc.date.none.fl_str_mv 2001
2009
2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/10500
url https://hdl.handle.net/2445/10500
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.64.024305
Physical Review B, 2001, vol. 64, núm. 2, p. 024305(1)-024305(6)
http://dx.doi.org/10.1103/PhysRevB.64.024305
dc.rights.none.fl_str_mv (c) The American Physical Society, 2001
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The American Physical Society, 2001
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 6 p.
application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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