Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation point

Gas liquefiers allow efficient transport and storage of gases, key for the development of new energy vectors such as hydrogen fuel. In this sense, magnetic liquefiers based on the magnetocaloric effect are an energy-saving and sustainable alternative to current systems based on the Joule-Thomson exp...

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Detalhes bibliográficos
Autores: Moreno-Ramírez, Luis M., Rojas, Daniel P., Espeso, José I., Rodríguez Fernández, Jesús, Franco, V.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2026
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/418884
Acesso em linha:http://hdl.handle.net/10261/418884
https://api.elsevier.com/content/abstract/scopus_id/105013137436
Access Level:acceso abierto
Palavra-chave:Ce(La)In2 alloys
Hydrogen liquefaction
Magnetocaloric effect
Rare earths
Specific heat measurements
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spelling Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation pointMoreno-Ramírez, Luis M.Rojas, Daniel P.Espeso, José I.Rodríguez Fernández, JesúsFranco, V.Ce(La)In2 alloysHydrogen liquefactionMagnetocaloric effectRare earthsSpecific heat measurementsGas liquefiers allow efficient transport and storage of gases, key for the development of new energy vectors such as hydrogen fuel. In this sense, magnetic liquefiers based on the magnetocaloric effect are an energy-saving and sustainable alternative to current systems based on the Joule-Thomson expansion. Here, we report the magnetocaloric effect of light rare-earth-based Ce(La)In2 alloys near the hydrogen condensation point. They exhibit a first-order ferromagnetic to paramagnetic phase transition with reduced thermal hysteresis (0.05 K) and moderate criticality compared to their heavy rare-earth-based counterparts. Both isothermal entropy change, and adiabatic entropy change have been indirectly determined from heat capacity measurements. A previously developed method based on low-temperature truncation of heat capacity data was applied for those calculations, accounting for 8% underestimation of the maximum values as well as possible misinterpretations of the results in the paramagnetic range. The parent CeIn2 alloy shows an isothermal entropy change of 9.5 J/(kg·K) and an adiabatic temperature change of 2.8 K for a magnetic field change of 5 T. The substitution of Ce by La leads to a slight decrease of the transition temperature in the explored range together with a significant reduction of the magnetocaloric magnitudes: about −1.0 J/(kg·K) and about −0.2 K per atom fraction of La for the isothermal entropy and adiabatic temperature changes for 5 T, respectively.Peer reviewedElsevierMoreno-Ramírez, Luis M. [0000-0003-1937-8663]Rojas, Daniel P. [0000-0002-5620-8586]Rodríguez Fernández, Jesús [0000-0002-4046-2969]Franco, V. [0000-0003-3028-6815]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262026info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/418884https://api.elsevier.com/content/abstract/scopus_id/105013137436reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésThe underlying dataset has been published as supplementary material of the article in the publisher platform at http://dx.doi.org/10.1016/j.jre.2025.03.010http://dx.doi.org/10.1016/j.jre.2025.03.010Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4188842026-05-22T06:33:51Z
dc.title.none.fl_str_mv Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation point
title Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation point
spellingShingle Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation point
Moreno-Ramírez, Luis M.
Ce(La)In2 alloys
Hydrogen liquefaction
Magnetocaloric effect
Rare earths
Specific heat measurements
title_short Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation point
title_full Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation point
title_fullStr Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation point
title_full_unstemmed Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation point
title_sort Magnetocaloric effect of Ce(La)In2 alloys near hydrogen condensation point
dc.creator.none.fl_str_mv Moreno-Ramírez, Luis M.
Rojas, Daniel P.
Espeso, José I.
Rodríguez Fernández, Jesús
Franco, V.
author Moreno-Ramírez, Luis M.
author_facet Moreno-Ramírez, Luis M.
Rojas, Daniel P.
Espeso, José I.
Rodríguez Fernández, Jesús
Franco, V.
author_role author
author2 Rojas, Daniel P.
Espeso, José I.
Rodríguez Fernández, Jesús
Franco, V.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Moreno-Ramírez, Luis M. [0000-0003-1937-8663]
Rojas, Daniel P. [0000-0002-5620-8586]
Rodríguez Fernández, Jesús [0000-0002-4046-2969]
Franco, V. [0000-0003-3028-6815]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Ce(La)In2 alloys
Hydrogen liquefaction
Magnetocaloric effect
Rare earths
Specific heat measurements
topic Ce(La)In2 alloys
Hydrogen liquefaction
Magnetocaloric effect
Rare earths
Specific heat measurements
description Gas liquefiers allow efficient transport and storage of gases, key for the development of new energy vectors such as hydrogen fuel. In this sense, magnetic liquefiers based on the magnetocaloric effect are an energy-saving and sustainable alternative to current systems based on the Joule-Thomson expansion. Here, we report the magnetocaloric effect of light rare-earth-based Ce(La)In2 alloys near the hydrogen condensation point. They exhibit a first-order ferromagnetic to paramagnetic phase transition with reduced thermal hysteresis (0.05 K) and moderate criticality compared to their heavy rare-earth-based counterparts. Both isothermal entropy change, and adiabatic entropy change have been indirectly determined from heat capacity measurements. A previously developed method based on low-temperature truncation of heat capacity data was applied for those calculations, accounting for 8% underestimation of the maximum values as well as possible misinterpretations of the results in the paramagnetic range. The parent CeIn2 alloy shows an isothermal entropy change of 9.5 J/(kg·K) and an adiabatic temperature change of 2.8 K for a magnetic field change of 5 T. The substitution of Ce by La leads to a slight decrease of the transition temperature in the explored range together with a significant reduction of the magnetocaloric magnitudes: about −1.0 J/(kg·K) and about −0.2 K per atom fraction of La for the isothermal entropy and adiabatic temperature changes for 5 T, respectively.
publishDate 2026
dc.date.none.fl_str_mv 2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/418884
https://api.elsevier.com/content/abstract/scopus_id/105013137436
url http://hdl.handle.net/10261/418884
https://api.elsevier.com/content/abstract/scopus_id/105013137436
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv The underlying dataset has been published as supplementary material of the article in the publisher platform at http://dx.doi.org/10.1016/j.jre.2025.03.010
http://dx.doi.org/10.1016/j.jre.2025.03.010
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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