Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compound

In this work, we present an investigation of the magnetic and magnetocaloric properties of Mn0.98Cr(0.02-x)FexAs compounds with x = 0.002, 0.005 and 0.010. Our findings show that as Fe content increases the unit cell volume decreases, which indicates that Fe doping emulates the pressure effect on th...

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Autores: Ipus Bados, Jhon Jairo, Ribeiro, Paula O., Ranke, Pedro Jorge von, Caraballo Vivas, R. J., Gomes Carvalho, Alexandre Magnus, Coelho, Adelino Aguiar, Franco García, Victorino, Rocco, Daniel Leandro
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/96760
Acceso en línea:https://hdl.handle.net/11441/96760
https://doi.org/10.1016/j.jmmm.2017.04.030
Access Level:acceso abierto
Palabra clave:Composite
Magnetic entropy change
Magnetocaloric effect
MnAs and derivatives
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spelling Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compoundIpus Bados, Jhon JairoRibeiro, Paula O.Ranke, Pedro Jorge vonCaraballo Vivas, R. J.Gomes Carvalho, Alexandre MagnusCoelho, Adelino AguiarFranco García, VictorinoRocco, Daniel LeandroCompositeMagnetic entropy changeMagnetocaloric effectMnAs and derivativesIn this work, we present an investigation of the magnetic and magnetocaloric properties of Mn0.98Cr(0.02-x)FexAs compounds with x = 0.002, 0.005 and 0.010. Our findings show that as Fe content increases the unit cell volume decreases, which indicates that Fe doping emulates the pressure effect on the crystalline structure. The transition temperature TC decreases as x increases and it can be set at approximate value of room temperature by changing the doping level. In addition, the magnetic entropy change ΔSM was determined using a discontinuous measurement protocol, and realistic values from the magnetocaloric effect presented by MnAs-type compounds under pressure (emulated pressure) could be obtained. The values of ΔSMMAX are very large, around −11 Jkg−1K−1 with ΔH = 15 kOe, which is higher than that observed for most compounds with TC around room temperature. However, ΔSM is confined to a narrow temperature range of 11 K. To overcome this drawback, the composition of a theoretical composite formed by our samples was calculated in order to obtain a table-shaped ΔSM curve. The simulated composite showed a high value of full width at half maximum δTFWHM of 33 K, which is much higher than that of single sample.Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro - FAPERJ E-26/110.393/2014, E-16/210.263/2014Coordenação de aperfeiçoamento de pessoal de nivel superior - CAPES 485200/2013-9Fundación de Apoyo a la Investigación del Estado de São Paulo - FAPESP 2012/03480-0Ministerio de Economía y Competitividad MAT2013-45165-PElsevierFísica de la Materia Condensada2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/96760https://doi.org/10.1016/j.jmmm.2017.04.030reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of Magnetism and Magnetic Materials, 436, 85-90.E-26/110.393/2014E-16/210.263/2014485200/2013-92012/03480-0MAT2013-45165-Phttp://dx.doi.org/10.1016/j.jmmm.2017.04.030info:eu-repo/semantics/openAccessoai:idus.us.es:11441/967602026-06-17T12:51:07Z
dc.title.none.fl_str_mv Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compound
title Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compound
spellingShingle Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compound
Ipus Bados, Jhon Jairo
Composite
Magnetic entropy change
Magnetocaloric effect
MnAs and derivatives
title_short Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compound
title_full Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compound
title_fullStr Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compound
title_full_unstemmed Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compound
title_sort Tunable magnetocaloric effect around room temperature by Fe doping in Mn0.98Cr(0.02-x)FexAs compound
dc.creator.none.fl_str_mv Ipus Bados, Jhon Jairo
Ribeiro, Paula O.
Ranke, Pedro Jorge von
Caraballo Vivas, R. J.
Gomes Carvalho, Alexandre Magnus
Coelho, Adelino Aguiar
Franco García, Victorino
Rocco, Daniel Leandro
author Ipus Bados, Jhon Jairo
author_facet Ipus Bados, Jhon Jairo
Ribeiro, Paula O.
Ranke, Pedro Jorge von
Caraballo Vivas, R. J.
Gomes Carvalho, Alexandre Magnus
Coelho, Adelino Aguiar
Franco García, Victorino
Rocco, Daniel Leandro
author_role author
author2 Ribeiro, Paula O.
Ranke, Pedro Jorge von
Caraballo Vivas, R. J.
Gomes Carvalho, Alexandre Magnus
Coelho, Adelino Aguiar
Franco García, Victorino
Rocco, Daniel Leandro
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Física de la Materia Condensada
dc.subject.none.fl_str_mv Composite
Magnetic entropy change
Magnetocaloric effect
MnAs and derivatives
topic Composite
Magnetic entropy change
Magnetocaloric effect
MnAs and derivatives
description In this work, we present an investigation of the magnetic and magnetocaloric properties of Mn0.98Cr(0.02-x)FexAs compounds with x = 0.002, 0.005 and 0.010. Our findings show that as Fe content increases the unit cell volume decreases, which indicates that Fe doping emulates the pressure effect on the crystalline structure. The transition temperature TC decreases as x increases and it can be set at approximate value of room temperature by changing the doping level. In addition, the magnetic entropy change ΔSM was determined using a discontinuous measurement protocol, and realistic values from the magnetocaloric effect presented by MnAs-type compounds under pressure (emulated pressure) could be obtained. The values of ΔSMMAX are very large, around −11 Jkg−1K−1 with ΔH = 15 kOe, which is higher than that observed for most compounds with TC around room temperature. However, ΔSM is confined to a narrow temperature range of 11 K. To overcome this drawback, the composition of a theoretical composite formed by our samples was calculated in order to obtain a table-shaped ΔSM curve. The simulated composite showed a high value of full width at half maximum δTFWHM of 33 K, which is much higher than that of single sample.
publishDate 2017
dc.date.none.fl_str_mv 2017
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/11441/96760
https://doi.org/10.1016/j.jmmm.2017.04.030
url https://hdl.handle.net/11441/96760
https://doi.org/10.1016/j.jmmm.2017.04.030
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Magnetism and Magnetic Materials, 436, 85-90.
E-26/110.393/2014
E-16/210.263/2014
485200/2013-9
2012/03480-0
MAT2013-45165-P
http://dx.doi.org/10.1016/j.jmmm.2017.04.030
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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score 15,300724

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