Increased magnetocaloric response of FeMnNiGeSi high-entropy alloys

The search for high-entropy alloys (HEAs), a new class of materials, with high magnetocaloric perfor- mance can address the open question about their potential in functional applications. HEAs exist in a vast compositional space but magnetocaloric HEAs typically exhibit modest magnetocaloric respons...

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Authors: Law, Jia Yan, Díaz García, Álvaro, Moreno Ramírez, Luis Miguel, Franco García, Victorino
Format: article
Status:Published version
Publication Date:2021
Country:España
Institution:Universidad de Sevilla (US)
Repository:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/128061
Online Access:https://hdl.handle.net/11441/128061
https://doi.org/10.1016/j.actamat.2021.116931
Access Level:Open access
Keyword:High-entropy alloys
First-order phase transitions
Magneto-structural transformations
Functional properties
Magnetocaloric effect
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repository_id_str
spelling Increased magnetocaloric response of FeMnNiGeSi high-entropy alloysLaw, Jia YanDíaz García, ÁlvaroMoreno Ramírez, Luis MiguelFranco García, VictorinoHigh-entropy alloysFirst-order phase transitionsMagneto-structural transformationsFunctional propertiesMagnetocaloric effectThe search for high-entropy alloys (HEAs), a new class of materials, with high magnetocaloric perfor- mance can address the open question about their potential in functional applications. HEAs exist in a vast compositional space but magnetocaloric HEAs typically exhibit modest magnetocaloric response as they undergo second-order magnetic phase transitions. In this work, through a property-directed search ap- proach, FeMnNiGeSi HEAs with varying Ge/Si ratio are found in the large HEA space to exhibit magneto- structural first-order phase transition. Isothermal entropy change as large as 13 J kg -1 K -1 (for 2.5T) is achieved, which is the largest reported to date for magnetocaloric HEAs. When compared to conventional high-performance magnetocaloric materials, our work is observed to be comparable to many of the con- ventional systems, closing the gap between magnetocaloric HEAs versus conventional magnetocaloric ma- terials for the first time. This opens a new path for the search of functional materials with the optimal mechanical properties of HEAs.FEDER, Unión Europea PID2019–105720RB- I00Junta de Andalucía US-1260179Consejería de Economía, Conocimiento, Empresas y Universidad de la Junta de Andalucía P18-RT-746Premio Mensual Publicación Científica Destacada de la US. Facultad de FísicaElsevierFísica de la Materia CondensadaEuropean Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)Junta de AndalucíaConsejería de Economía, Conocimiento, Empresas y Universidad2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/128061https://doi.org/10.1016/j.actamat.2021.116931reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésActa Materialia, 212, 116931.PID2019–105720RB- I00US-1260179P18-RT-746https://doi.org/10.1016/j.actamat.2021.116931info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1280612026-06-17T12:51:07Z
dc.title.none.fl_str_mv Increased magnetocaloric response of FeMnNiGeSi high-entropy alloys
title Increased magnetocaloric response of FeMnNiGeSi high-entropy alloys
spellingShingle Increased magnetocaloric response of FeMnNiGeSi high-entropy alloys
Law, Jia Yan
High-entropy alloys
First-order phase transitions
Magneto-structural transformations
Functional properties
Magnetocaloric effect
title_short Increased magnetocaloric response of FeMnNiGeSi high-entropy alloys
title_full Increased magnetocaloric response of FeMnNiGeSi high-entropy alloys
title_fullStr Increased magnetocaloric response of FeMnNiGeSi high-entropy alloys
title_full_unstemmed Increased magnetocaloric response of FeMnNiGeSi high-entropy alloys
title_sort Increased magnetocaloric response of FeMnNiGeSi high-entropy alloys
dc.creator.none.fl_str_mv Law, Jia Yan
Díaz García, Álvaro
Moreno Ramírez, Luis Miguel
Franco García, Victorino
author Law, Jia Yan
author_facet Law, Jia Yan
Díaz García, Álvaro
Moreno Ramírez, Luis Miguel
Franco García, Victorino
author_role author
author2 Díaz García, Álvaro
Moreno Ramírez, Luis Miguel
Franco García, Victorino
author2_role author
author
author
dc.contributor.none.fl_str_mv Física de la Materia Condensada
European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)
Junta de Andalucía
Consejería de Economía, Conocimiento, Empresas y Universidad
dc.subject.none.fl_str_mv High-entropy alloys
First-order phase transitions
Magneto-structural transformations
Functional properties
Magnetocaloric effect
topic High-entropy alloys
First-order phase transitions
Magneto-structural transformations
Functional properties
Magnetocaloric effect
description The search for high-entropy alloys (HEAs), a new class of materials, with high magnetocaloric perfor- mance can address the open question about their potential in functional applications. HEAs exist in a vast compositional space but magnetocaloric HEAs typically exhibit modest magnetocaloric response as they undergo second-order magnetic phase transitions. In this work, through a property-directed search ap- proach, FeMnNiGeSi HEAs with varying Ge/Si ratio are found in the large HEA space to exhibit magneto- structural first-order phase transition. Isothermal entropy change as large as 13 J kg -1 K -1 (for 2.5T) is achieved, which is the largest reported to date for magnetocaloric HEAs. When compared to conventional high-performance magnetocaloric materials, our work is observed to be comparable to many of the con- ventional systems, closing the gap between magnetocaloric HEAs versus conventional magnetocaloric ma- terials for the first time. This opens a new path for the search of functional materials with the optimal mechanical properties of HEAs.
publishDate 2021
dc.date.none.fl_str_mv 2021
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/11441/128061
https://doi.org/10.1016/j.actamat.2021.116931
url https://hdl.handle.net/11441/128061
https://doi.org/10.1016/j.actamat.2021.116931
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Acta Materialia, 212, 116931.
PID2019–105720RB- I00
US-1260179
P18-RT-746
https://doi.org/10.1016/j.actamat.2021.116931
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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