Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/329868
Full metadata record
DC FieldValueLanguage
dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampMoura, Karoline Oliveirapt_BR
dc.typeArtigopt_BR
dc.titleReversal Magnetization Dependence With The Cr And Fe Oxidation States In Yfe1-xcrxo3 (0 <= X <= 1) Perovskitesen
dc.titleReversal magnetization dependence with the Cr and Fe oxidation states in YFe1-xCrxO3 (0 <= x <= 1) perovskitespt_BR
dc.contributor.authorFabian, F. A.pt_BR
dc.contributor.authorPedra, P. P.pt_BR
dc.contributor.authorMoura, K. O.pt_BR
dc.contributor.authorDuque, J. G. S.pt_BR
dc.contributor.authorMeneses, C. T.pt_BR
dc.subjectPerovskiteen
dc.subjectX-ray Diffractionen
dc.subjectMagnetic Propertiesen
dc.subjectCo-precipitation Methoden
dc.subjectPerovskita, Raios - Difraçãopt_BR
dc.subject.otherlanguagePerovskite, X-rays - Diffractionpt_BR
dc.description.abstractIn this work, we have carried out a detailed study of the magnetic and structural properties of YFe1-xCrxO3 (0 <= x <= 1) samples with orthorhombic structure obtained by co-precipitation method. Analysis of X-ray diffraction data using Rietveld refinement show that all samples present an orthorhombic crystal system with space group Pnma. Besides, we have observed a reduction of unit cell volume with increasing of the Cr concentration. SEM images show the formation of grains of micrometer order. X-ray Absorption near edge spectroscopy (XANES) measurements show a shift of absorption edge which can be indicate there is (i) different oxidation states to Fe and Cr ions and/or (ii) a changing in the point symmetry of Fe and Cr ions to the compounds. The magnetization measurements indicate a continuous decreasing of the magnetic transition temperature as function of chromium doping. The reversal magnetization effect was observed to concentrations around x=0.5. Besides, the deviation of the Curie-Weiss law and a weak ferromagnetic behavior observed at room temperature in the M vs H curves can be attributed to the strong magnetic interactions between the transition metals with different oxidation states. (C) 2016 Elsevier B.V. All rights reserved.en
dc.description.abstractIn this work, we have carried out a detailed study of the magnetic and structural properties of YFe1-xCrxO3 (0 <= x <= 1) samples with orthorhombic structure obtained by co-precipitation method. Analysis of X-ray diffraction data using Rietveld refinement show that all samples present an orthorhombic crystal system with space group Pnma. Besides, we have observed a reduction of unit cell volume with increasing of the Cr concentration. SEM images show the formation of grains of micrometer order. X-ray Absorption near edge spectroscopy (XANES) measurements show a shift of absorption edge which can be indicate there is (i) different oxidation states to Fe and Cr ions and/or (ii) a changing in the point symmetry of Fe and Cr ions to the compounds. The magnetization measurements indicate a continuous decreasing of the magnetic transition temperature as function of chromium doping. The reversal magnetization effect was observed to concentrations around x=0.5. Besides, the deviation of the Curie-Weiss law and a weak ferromagnetic behavior observed at room temperature in the M vs H curves can be attributed to the strong magnetic interactions between the transition metals with different oxidation states.pt_BR
dc.relation.ispartofJournal of magnetism and magnetic materialspt_BR
dc.relation.ispartofabbreviationJ. magn. magn. mater.pt_BR
dc.publisher.cityAmsterdampt_BR
dc.publisher.countryHolandapt_BR
dc.publisherElsevierpt_BR
dc.date.issued2016pt_BR
dc.date.monthofcirculationJunept_BR
dc.identifier.citationJournal Of Magnetism And Magnetic Materials. Elsevier Science Bv, v. 408, p. 94 - 98, 2016.pt_BR
dc.language.isoengpt_BR
dc.description.volume408pt_BR
dc.description.firstpage94pt_BR
dc.description.lastpage98pt_BR
dc.rightsfechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0304-8853pt_BR
dc.identifier.eissn1873-4766pt_BR
dc.identifier.doi10.1016/j.jmmm.2016.02.029pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S0304885316301305pt_BR
dc.description.sponsorshipCNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOpt_BR
dc.description.sponsorshipCAPES - COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIORpt_BR
dc.description.sponsorshipFUNDAÇÃO DE APOIO À PESQUISA E À INOVAÇÃO TECNOLÓGICA DO ESTADO DE SERGIPE - FAPITECpt_BR
dc.description.sponsorship1CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOpt_BR
dc.description.sponsorship1CAPES - COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIORpt_BR
dc.description.sponsorship1FUNDAÇÃO DE APOIO À PESQUISA E À INOVAÇÃO TECNOLÓGICA DO ESTADO DE SERGIPE - FAPITECpt_BR
dc.description.sponsordocumentnumberSem informaçãopt_BR
dc.description.sponsordocumentnumberSem informaçãopt_BR
dc.description.sponsordocumentnumberSem informaçãopt_BR
dc.date.available2017-11-13T13:56:29Z-
dc.date.accessioned2017-11-13T13:56:29Z-
dc.description.provenanceMade available in DSpace on 2017-11-13T13:56:29Z (GMT). No. of bitstreams: 1 000372319900016.pdf: 1536123 bytes, checksum: 902347eed61f4521fea6b4c663f47f65 (MD5) Previous issue date: 2016 Bitstreams deleted on 2020-09-02T13:43:10Z: 000372319900016.pdf,. Added 1 bitstream(s) on 2020-09-02T13:47:38Z : No. of bitstreams: 1 000372319900016.pdf: 1606412 bytes, checksum: 92fcc4a8d852f32f9d2da39ce971a5a0 (MD5)en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/329868-
dc.contributor.departmentDepartamento de Física da Matéria Condensadapt_BR
dc.contributor.unidadeInstituto de Física Gleb Wataghinpt_BR
dc.subject.keywordMagnetic properties, Co-precipitation methodpt_BR
dc.identifier.source000372319900016pt_BR
dc.creator.orcid0000-0002-4772-1900pt_BR
dc.type.formArtigopt_BR
dc.description.sponsorNoteThis work was supported by the Brazilian funding agencies CNPq (National Council for Scientific and Technological), CAPES (Brazilian Federal Agency for the Support and Evaluation of Graduate Education) and FAPITEC-SE (Foundation for Support to Research and Technological Innovation of Sergipe State). The authors are grateful for access to the facilities of Brazilian Synchrotron Light Laboratory (LNLS).pt_BR
Appears in Collections:IFGW - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
000372319900016.pdf1.57 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.