Anelastic spectroscopy in superconducting oxides

Página do item simplificado
dc.contributor.authorDe Albuquerque Gimenez, Juliana Maria [UNESP]
dc.contributor.authorGrandini, Carlos Roberto [UNESP]
dc.contributor.authorSantos, Dayse Iara dos [UNESP]
dc.contributor.authorDa Cunha, Alfredo Gonçalves
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Espírito Santo (UFES)
dc.date.accessioned2014-05-27T11:21:44Z
dc.date.available2014-05-27T11:21:44Z
dc.date.issued2005-12-01
dc.description.abstractSince the discovery of the high Tc superconductors, several works have been made about the different properties of these materials. Anelastic spectroscopy experiments are sensitive tools to the study of defects in solids and phase transitions. By this technique, we can distinguish the different types of atomic jumps that happen to different temperatures. The intensity of the peaks in the anelastic spectrum and the step in the torsional modulus are related with the concentration of the relaxing entities, and the position of the peaks is determined by its mobility. In this paper, the study on Bi and Sm based superconducting oxides was made by anelastic relaxation measurements using a torsion pendulum. The samples were submitted to successive thermal treatments in high vacuum, in the temperature range between 100 K and 650 K, heating rate about 1 K/min. For Bi based superconducting oxides the results shown two peaks, that were associated to interstitial oxygen mobility and to orthorhombic to monoclinic phase transition. For Sm based superconducting oxides the results shown a relaxation peak that was attributed to the jumps of the oxygen atoms in the inter-chains O1 and 05 of the lattice.en
dc.description.affiliationUSP Instituto de Física de São Carlos, 13.560-970, São Carlos, SP
dc.description.affiliationUNESP Departamento de Física, 17.033-360, Bauru, SP
dc.description.affiliationUFES Departamento de Física, 29.060-900, Vitória, ES
dc.description.affiliationUnespUNESP Departamento de Física, 17.033-360, Bauru, SP
dc.format.extent581-586
dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/MSF.498-499.581
dc.identifier.citationMaterials Science Forum, v. 498-499, p. 581-586.
dc.identifier.doi10.4028/www.scientific.net/MSF.498-499.581
dc.identifier.issn0255-5476
dc.identifier.lattes2949983867418338
dc.identifier.lattes8506867595279427
dc.identifier.orcid0000-0002-3336-309X
dc.identifier.scopus2-s2.0-35248838310
dc.identifier.urihttp://hdl.handle.net/11449/68604
dc.identifier.wosWOS:000233984500095
dc.language.isoeng
dc.relation.ispartofMaterials Science Forum
dc.relation.ispartofsjr0,180
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBSCCO anelastic spectroscopy
dc.subjectCuprates
dc.subjectOxygen mobility
dc.subjectSBCO
dc.subjectConcentration (process)
dc.subjectHeat treatment
dc.subjectPhase transitions
dc.subjectRelaxation processes
dc.subjectSpectroscopic analysis
dc.subjectThermal effects
dc.subjectSuperconducting materials
dc.titleAnelastic spectroscopy in superconducting oxidesen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.scientific.net/
unesp.author.lattes2949983867418338[2]
unesp.author.lattes8506867595279427
unesp.author.orcid0000-0002-3336-309X[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt

Arquivos

Coleções

Bauru - FC - Faculdade de Ciências