Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/77504
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampReis, Ricardo Donizeth dospt_BR
dc.contributor.authorunicampCardoso, Lisandro Paviept_BR
dc.contributor.authorunicampGandra, Flávio César Guimarãespt_BR
dc.typeArtigopt_BR
dc.titleAnisotropic magnetocaloric effect in ErGa2 and HoGa2 single-crystalspt_BR
dc.contributor.authorReis, R. D. dospt_BR
dc.contributor.authorSilva, L. M. dapt_BR
dc.contributor.authorSantos, A. O. dospt_BR
dc.contributor.authorMedina, A. M. N.pt_BR
dc.contributor.authorCardoso, L. P.pt_BR
dc.contributor.authorGandra, F. C. G.pt_BR
dc.subjectAnisotropiapt_BR
dc.subjectEfeito magnetocalóricopt_BR
dc.subjectCompostos intermetálicospt_BR
dc.subjectMateriais magnéticospt_BR
dc.subject.otherlanguageAnisotropypt_BR
dc.subject.otherlanguageMagnetocaloric effectpt_BR
dc.subject.otherlanguageIntermetallic compoundspt_BR
dc.subject.otherlanguageMagnetic materialspt_BR
dc.description.abstractIn this work we study the anisotropic magnetocaloric properties of ErGa2 and HoGa2 single-crystals. Both compounds present antiferromagnetic ordering below 10 K but with different easy axis as a result of the crystal field anisotropy. The single-crystal conventional MCE values are similar or in certain circumstances even larger than the results for the polycrystalline material. The anisotropic MCE was calculated by taking the difference of the entropy change of the easy and hard magnetization directions. For both compounds, the anisotropic variation of entropy is as large as the conventional entropy change obtained by sweeping the magnetic field up to 5 T. Particularly for ErGa2 an inverse MCE for a 3 T field oriented along the easy axis is obtained with similar magnitude of the 5 T MCE found for polycrystalline samples. The results show that by exploring anisotropic properties of the materials it is possible to obtain a significant MCE. From a technological point of view this can be an interesting alternative because the MCE is produced just by rotating the magnetic material under a constant magnetic field. (c) 2013 Elsevier B.V. All rights reserved.pt
dc.description.abstractIn this work we study the anisotropic magnetocaloric properties of ErGa2 and HoGa2 single-crystals. Both compounds present antiferromagnetic ordering below 10 K but with different easy axis as a result of the crystal field anisotropy. The single-crystal conventional MCE values are similar or in certain circumstances even larger than the results for the polycrystalline material. The anisotropic MCE was calculated by taking the difference of the entropy change of the easy and hard magnetization directions. For both compounds, the anisotropic variation of entropy is as large as the conventional entropy change obtained by sweeping the magnetic field up to 5 T. Particularly for ErGa2 an inverse MCE for a 3 T field oriented along the easy axis is obtained with similar magnitude of the 5 T MCE found for polycrystalline samples. The results show that by exploring anisotropic properties of the materials it is possible to obtain a significant MCE. From a technological point of view this can be an interesting alternative because the MCE is produced just by rotating the magnetic material under a constant magnetic field.pt_BR
dc.relation.ispartofJournal of alloys and compounds. An interdisciplinary journal of materials science and solid-state chemistry and physicspt_BR
dc.relation.ispartofabbreviationJ. alloys compd.pt_BR
dc.publisher.cityAmsterdampt_BR
dc.publisher.countryHolandapt_BR
dc.publisherElsevierpt_BR
dc.date.issued2014pt_BR
dc.date.monthofcirculationJan.pt_BR
dc.identifier.citationJournal Of Alloys And Compounds. Elsevier Science Sa, v. 582, n. 461, n. 465, 2014.pt_BR
dc.language.isoengpt_BR
dc.description.volume582pt_BR
dc.description.firstpage461pt_BR
dc.description.lastpage465pt_BR
dc.rightsfechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0925-8388pt_BR
dc.identifier.eissn1873-4669pt_BR
dc.identifier.doi10.1016/j.jallcom.2013.08.023pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S0925838813018690pt_BR
dc.description.sponsorshipFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPpt_BR
dc.description.sponsorshipFUNDAÇÃO DE AMPARO À PESQUISA E AO DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO DO MARANHÃO - FAPEMApt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsorship1FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPpt_BR
dc.description.sponsorship1FUNDAÇÃO DE AMPARO À PESQUISA E AO DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO DO MARANHÃO - FAPEMApt_BR
dc.description.sponsorship1CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsordocumentnumberSem informaçãopt_BR
dc.description.sponsordocumentnumberSem informaçãopt_BR
dc.description.sponsordocumentnumberSem informaçãopt_BR
dc.date.available2014-08-01T18:20:46Z
dc.date.available2015-11-26T17:06:23Z-
dc.date.accessioned2014-08-01T18:20:46Z
dc.date.accessioned2015-11-26T17:06:23Z-
dc.description.provenanceMade available in DSpace on 2014-08-01T18:20:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2014. Added 1 bitstream(s) on 2020-07-10T18:33:37Z : No. of bitstreams: 1 000325468100076.pdf: 3616629 bytes, checksum: def217eb40c81d80b1b5ba26e23740cb (MD5)en
dc.description.provenanceMade available in DSpace on 2015-11-26T17:06:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2014en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/77504
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/77504-
dc.contributor.departmentDepartamento de Eletrônica Quânticapt_BR
dc.contributor.departmentDepartamento de Física Aplicadapt_BR
dc.contributor.departmentDepartamento de Eletrônica Quânticapt_BR
dc.contributor.unidadeInstituto de Física Gleb Wataghinpt_BR
dc.contributor.unidadeInstituto de Física Gleb Wataghinpt_BR
dc.contributor.unidadeInstituto de Física Gleb Wataghinpt_BR
dc.identifier.source000325468100076pt_BR
dc.creator.orcid0000-0002-2212-4173pt_BR
dc.creator.orcid0000-0003-3910-2293pt_BR
dc.creator.orcid0000-0002-7630-7856pt_BR
dc.type.formArtigopt_BR
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