Electron beam induced compositional and structural changes in Tl_2Ba_2CuO_(6+σ)

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dc.contributor.authorDíaz-Guerra Viejo, Carlos
dc.contributor.authorPiqueras De Noriega, Francisco Javier
dc.contributor.authorTomashpolsky, Y. Y.
dc.contributor.authorSadovskaya, N. V.
dc.contributor.authorOpagiste, C.
dc.date.accessioned2023-06-20T19:04:30Z
dc.date.available2023-06-20T19:04:30Z
dc.date.issued1996-09
dc.description© 1996 IOP Publishing Ltd. The authors thank S G Prutchenko for EDX measurements. CDG thanks the Spanish MEC for an FPI research grant. This work has been supported by DGICYT (project PB 93-1256), CICYT (project MAT 95-1184-E), NATO (grant HTECH. LG 941034), the Russian Foundation of Fundamental Research (project 94-03-0802) and the Russian State Programme on High Tc Superconductivity (project 93079).
dc.description.abstractTl_2Ba-2CuO_(6+σ) ceramics have been irradiated in a scanning electron microscope. The resultant changes in the cationic stoichiometry and oxygen content of the samples were investigated by cathodoluminescence (CL), secondary electron emission (SEE) and EDX microanalysis. ii depletion and Ba enrichment are observed in the irradiated areas. CL spectroscopy shows that irradiation causes the increase of a 540 nm emission band attributed to complex centres involving oxygen vacancies. Other features of the CL spectra strongly suggest the presence of radiation induced new phases. The SEE yield, Delta, has been found to depend on the oxygen content of the samples This dependence can be explained on the basis of two charge carrier subsystems and their mutual interaction, Measurements of ∆ allow us to detect an oxygen deficient region, sometimes extending up to a distance of about 1000 mu m, that surrounds the irradiated material.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipDGICYT
dc.description.sponsorshipCICYT
dc.description.sponsorshipNATO
dc.description.sponsorshipRussian Foundation of Fundamental Research
dc.description.sponsorshipRussian State Programme on High Tc Superconductivity
dc.description.sponsorshipSpanish MEC
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/26736
dc.identifier.doi10.1088/0953-2048/9/9/010
dc.identifier.issn0953-2048
dc.identifier.officialurlhttp://dx.doi.org/10.1088/0953-2048/9/9/010
dc.identifier.relatedurlhttp://iopscience.iop.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/59209
dc.issue.number9
dc.journal.titleSuperconductor Science & Technology
dc.language.isoeng
dc.page.final774
dc.page.initial766
dc.publisherIOP Publishing LTD
dc.relation.projectIDPB 93-1256
dc.relation.projectIDMAT 95-1184-E
dc.relation.projectIDHTECH. LG 941034
dc.relation.projectID94-03-0802
dc.relation.projectIDproject 93079
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordMagnetic-Properties. Oxygen-Loss
dc.subject.keywordSuperconductors
dc.subject.keywordLuminescence
dc.subject.keywordCathodoluminescence
dc.subject.keywordPhase
dc.subject.keywordFilms
dc.subject.keywordTc
dc.subject.keywordYBa_2Cu_3O_(7-X)
dc.subject.keywordTemperature
dc.subject.ucmFísica de materiales
dc.titleElectron beam induced compositional and structural changes in Tl_2Ba_2CuO_(6+σ)
dc.typejournal article
dc.volume.number9
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