Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys

Martín Jefremovas, Elizabeth|||0000-0001-8501-058X; Fuente Rodríguez, María de la; Alonso Masa, Javier|||0000-0003-0045-5390; Rodríguez Fernández, Jesús|||0000-0002-4046-2969; Espeso Martínez, José Ignacio|||0000-0002-4018-7186; Puente-Orench, Inés; Rojas, Daniel P.; Gracía-Prieto, Ana; Fernández-Gubieda, María Luisa; Rodríguez-Fernández, Lidia; Fernández Barquín, Luis|||0000-0003-4722-3722

Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys

Recently, potential technological interest has been revealed for the production of magnetocaloric alloys using Rare-Earth intermetallics. In this work, three series of TbxR1_xCu2 (R Gd, La, Y) alloys have been produced in bulk and nanoparticle sizes via arc melting and high energy ball milling. Riet...

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Detalles Bibliográficos
Autores:	Martín Jefremovas, Elizabeth\|\|\|0000-0001-8501-058X, Fuente Rodríguez, María de la, Alonso Masa, Javier\|\|\|0000-0003-0045-5390, Rodríguez Fernández, Jesús\|\|\|0000-0002-4046-2969, Espeso Martínez, José Ignacio\|\|\|0000-0002-4018-7186, Puente-Orench, Inés, Rojas, Daniel P., Gracía-Prieto, Ana, Fernández-Gubieda, María Luisa, Rodríguez-Fernández, Lidia, Fernández Barquín, Luis\|\|\|0000-0003-4722-3722
Tipo de recurso:	artículo
Fecha de publicación:	2020
País:	España
Institución:	Universidad de Cantabria (UC)
Repositorio:	UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:	inglés
OAI Identifier:	oai:repositorio.unican.es:10902/20566
Acceso en línea:	http://hdl.handle.net/10902/20566
Access Level:	acceso abierto
Palabra clave:	Magnetic nanoparticles Nanomagnetism Magnetic coupling Neutron diffraction Spin Glass

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spelling	Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle AlloysMartín Jefremovas, Elizabeth\|\|\|0000-0001-8501-058X Fuente Rodríguez, María de laAlonso Masa, Javier\|\|\|0000-0003-0045-5390Rodríguez Fernández, Jesús\|\|\|0000-0002-4046-2969Espeso Martínez, José Ignacio\|\|\|0000-0002-4018-7186Puente-Orench, InésRojas, Daniel P.Gracía-Prieto, AnaFernández-Gubieda, María LuisaRodríguez-Fernández, LidiaFernández Barquín, Luis\|\|\|0000-0003-4722-3722Magnetic nanoparticlesNanomagnetismMagnetic couplingNeutron diffractionSpin GlassRecently, potential technological interest has been revealed for the production of magnetocaloric alloys using Rare-Earth intermetallics. In this work, three series of TbxR1_xCu2 (R Gd, La, Y) alloys have been produced in bulk and nanoparticle sizes via arc melting and high energy ball milling. Rietveld refinements of the X-ray and Neutron diffraction patterns indicate that the crystalline structure in all alloys is consistent with TbCu2 orthorhombic Imma bulk crystalline structure. The analyses of the DC-magnetisation (MDC) and AC-susceptibility (cAC) show that three distinct degrees of disorder have been achieved by the combination of both the Tb3+replacement (dilution) and the nanoscaling. These disordered states are characterised by transitions which are evident to MDC, cAC and specific heat. There exists an evolution from the most ordered Superantiferromagnetic arrangement of the Tb0.5La0.5Cu2 NPs with Néel temperature, TN 27 K, and freezing temperature, Tf 7 K, to the less ordered weakly interacting Superparamagnetism of the Tb0.1Y0.9Cu2 nanoparticles (TN absent, and TB 3 K). The Super Spin Glass Tb0.5Gd0.5Cu2 nanoparticles (TN absent, and Tf 20 K) are considered an intermediate disposition in between those two extremes, according to their enhanced random-bond contribution to frustration.This work has been supported by the Spanish MAT2017-83631-C3-R grant. E.M.J.’s work was supported by “Beca de Colaboración”, BDNS: 311327 granted by Ministerio de Educación, Cultura y Deporte and “Beca Concepción Arenal” BDNS: 406333 granted by the Gobierno de Cantabria and the Universidad de Cantabria. MRF work was supported by FPI (BES-2012-058722).MDPIUniversidad de Cantabria20202020-10-28journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/20566Nanomaterials 2020, 10, 2148reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/205662026-06-02T12:39:31Z
dc.title.none.fl_str_mv	Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys
title	Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys
spellingShingle	Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys Martín Jefremovas, Elizabeth\|\|\|0000-0001-8501-058X Magnetic nanoparticles Nanomagnetism Magnetic coupling Neutron diffraction Spin Glass
title_short	Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys
title_full	Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys
title_fullStr	Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys
title_full_unstemmed	Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys
title_sort	Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys
dc.creator.none.fl_str_mv	Martín Jefremovas, Elizabeth\|\|\|0000-0001-8501-058X Fuente Rodríguez, María de la Alonso Masa, Javier\|\|\|0000-0003-0045-5390 Rodríguez Fernández, Jesús\|\|\|0000-0002-4046-2969 Espeso Martínez, José Ignacio\|\|\|0000-0002-4018-7186 Puente-Orench, Inés Rojas, Daniel P. Gracía-Prieto, Ana Fernández-Gubieda, María Luisa Rodríguez-Fernández, Lidia Fernández Barquín, Luis\|\|\|0000-0003-4722-3722
author	Martín Jefremovas, Elizabeth\|\|\|0000-0001-8501-058X
author_facet	Martín Jefremovas, Elizabeth\|\|\|0000-0001-8501-058X Fuente Rodríguez, María de la Alonso Masa, Javier\|\|\|0000-0003-0045-5390 Rodríguez Fernández, Jesús\|\|\|0000-0002-4046-2969 Espeso Martínez, José Ignacio\|\|\|0000-0002-4018-7186 Puente-Orench, Inés Rojas, Daniel P. Gracía-Prieto, Ana Fernández-Gubieda, María Luisa Rodríguez-Fernández, Lidia Fernández Barquín, Luis\|\|\|0000-0003-4722-3722
author_role	author
author2	Fuente Rodríguez, María de la Alonso Masa, Javier\|\|\|0000-0003-0045-5390 Rodríguez Fernández, Jesús\|\|\|0000-0002-4046-2969 Espeso Martínez, José Ignacio\|\|\|0000-0002-4018-7186 Puente-Orench, Inés Rojas, Daniel P. Gracía-Prieto, Ana Fernández-Gubieda, María Luisa Rodríguez-Fernández, Lidia Fernández Barquín, Luis\|\|\|0000-0003-4722-3722
author2_role	author author author author author author author author author author
dc.contributor.none.fl_str_mv	Universidad de Cantabria
dc.subject.none.fl_str_mv	Magnetic nanoparticles Nanomagnetism Magnetic coupling Neutron diffraction Spin Glass
topic	Magnetic nanoparticles Nanomagnetism Magnetic coupling Neutron diffraction Spin Glass
description	Recently, potential technological interest has been revealed for the production of magnetocaloric alloys using Rare-Earth intermetallics. In this work, three series of TbxR1_xCu2 (R Gd, La, Y) alloys have been produced in bulk and nanoparticle sizes via arc melting and high energy ball milling. Rietveld refinements of the X-ray and Neutron diffraction patterns indicate that the crystalline structure in all alloys is consistent with TbCu2 orthorhombic Imma bulk crystalline structure. The analyses of the DC-magnetisation (MDC) and AC-susceptibility (cAC) show that three distinct degrees of disorder have been achieved by the combination of both the Tb3+replacement (dilution) and the nanoscaling. These disordered states are characterised by transitions which are evident to MDC, cAC and specific heat. There exists an evolution from the most ordered Superantiferromagnetic arrangement of the Tb0.5La0.5Cu2 NPs with Néel temperature, TN 27 K, and freezing temperature, Tf 7 K, to the less ordered weakly interacting Superparamagnetism of the Tb0.1Y0.9Cu2 nanoparticles (TN absent, and TB 3 K). The Super Spin Glass Tb0.5Gd0.5Cu2 nanoparticles (TN absent, and Tf 20 K) are considered an intermediate disposition in between those two extremes, according to their enhanced random-bond contribution to frustration.
publishDate	2020
dc.date.none.fl_str_mv	2020 2020-10-28
dc.type.none.fl_str_mv	journal article http://purl.org/coar/resource_type/c_6501 NA http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv	info:eu-repo/semantics/article
format	article
dc.identifier.none.fl_str_mv	http://hdl.handle.net/10902/20566
url	http://hdl.handle.net/10902/20566
dc.language.none.fl_str_mv	Inglés eng
language_invalid_str_mv	Inglés
language	eng
dc.rights.none.fl_str_mv	open access http://purl.org/coar/access_right/c_abf2 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv	info:eu-repo/semantics/openAccess
rights_invalid_str_mv	open access http://purl.org/coar/access_right/c_abf2 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv	openAccess
dc.publisher.none.fl_str_mv	MDPI
publisher.none.fl_str_mv	MDPI
dc.source.none.fl_str_mv	Nanomaterials 2020, 10, 2148 reponame:UCrea Repositorio Abierto de la Universidad de Cantabria instname:Universidad de Cantabria (UC)
instname_str	Universidad de Cantabria (UC)
reponame_str	UCrea Repositorio Abierto de la Universidad de Cantabria
collection	UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score	15.300719

Exploring the Different Degrees of Magnetic Disorder in TbxR1_xCu2 Nanoparticle Alloys

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