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dc.contributor.authorVieira, Valdemar das Nevespt_BR
dc.contributor.authorMendonça, A.P.A.pt_BR
dc.contributor.authorDias, Fabio Teixeirapt_BR
dc.contributor.authorHneda, Marlon Luizpt_BR
dc.contributor.authorPureur Neto, Paulopt_BR
dc.contributor.authorSchaf, Jacobpt_BR
dc.contributor.authorMesquita, Fabianopt_BR
dc.date.accessioned2016-01-31T02:03:51Zpt_BR
dc.date.issued2015pt_BR
dc.identifier.issn1742-6588pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/132574pt_BR
dc.description.abstractIn this brief communication we applied the MZFC(T) and MFCC(T) reversible dc magnetizations to get the average superconducting kinetic energy density, kS(T,B) of YBa2Cu3O7-d, Y0.95Ca0.05Ba2Cu3O7-d and YBa1.75Sr0.25Cu3O7-d ceramic samples with the aim of study the effects of Ca and Sr doping on the kS(T,B). The MZFC(T) and MFCC(T) measurements were performed with a SQUID magnetometer from quantum design to dc magnetic fields up to 50kOe. The determination of the kS(T,B) from reversible dc magnetization is supported by virial theorem of superconductivity [kS(T,B) = - M.B]. The kS(T,B) results show an common temperature profile for all the samples which is smoothly affected by the magnetic field. On the other hand the kS(T,B) results to T ³ Tc could not be associated to the pseudogap phenomenon. The Ca doping affects more effectively the kS(T,B) behaviour then Sr doping. A possible explanation to this feature could be associated to the fact that the hole doping promoted by Ca doping depress more considerably the superconducting state and enhances the granular character of the YBa2Cu3O7-d superconductor than the chemical pressure effect promoted by Sr doping.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofJournal of physics : conference series. Bristol. Vol. 592 (2015), 012062, 6 p.pt_BR
dc.rightsOpen Accessen
dc.subjectMagnetizaçãopt_BR
dc.subjectCompostos de cálciopt_BR
dc.subjectCompostos de estrônciopt_BR
dc.subjectCompostos de báriopt_BR
dc.subjectCompostos de ítriopt_BR
dc.titleEffects of Ca and Sr chemical doping on the average superconducting kinetic energy of YBa2Cu3O7-δpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000982325pt_BR
dc.type.originEstrangeiropt_BR


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