Structural and composition changes in superconducting ceramics locally irradiated by electrons

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dc.contributor.authorTomashpolskii, Y. Y.
dc.contributor.authorSadovskaya, N. V.
dc.contributor.authorDíaz-Guerra Viejo, Carlos
dc.contributor.authorPiqueras De Noriega, Francisco Javier
dc.contributor.authorOpagiste, C.
dc.date.accessioned2023-06-20T19:02:45Z
dc.date.available2023-06-20T19:02:45Z
dc.date.issued1997-03
dc.description© 1997 American Institute of Physics. This work has been carried out under the auspices of RNTK AP SFSK (subprogram ‘‘High-Temperature Superconductivity,’’ Project 93079) and has received support from the Russian Fund for Fundamental Research (Project 96-03- 32068a), Grant HTECH.LG941034, DGIGYT Project PB 93-1256, and CICYT Project MAT 95-1184E.
dc.description.abstractThe structural changes and the cation and anion compositions of the surface of superconducting YBa_2Cu_3O_(7-x) and Tl_2Ba_2CuO_(6+x) ceramics after local irradiation for several seconds by an electron probe with an accelerating voltage of 25 kV and a current exceeding 10(-7) A are investigated by secondary-electron emission and by cathodoluminescence and x-ray microanalysis in a scanning electron microscope, Morphologically altered regions are detected in the irradiation epicenter, where the structure, chemical composition, and phase composition of the original compound are completely lost. In the intermediate zone between the epicenter and the periphery a distribution of the secondary emission yield is observed with a complex character that differs for the yttrium and thallium ceramics, and anomalies appear in the cathodoluminescence spectra, The experimental data are interpreted on the basis of ideas of oxygen losses under the direct influence of the electron probe and related electronic processes in superconductors.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipRNTK AP SFSK
dc.description.sponsorshipRussian Fund for Fundamental Research
dc.description.sponsorshipHTECH
dc.description.sponsorshipDGIGY
dc.description.sponsorshipCICYT
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/26423
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dc.identifier.doi10.1134/1.1129876
dc.identifier.issn1063-7834
dc.identifier.officialurlhttp://dx.doi.org/10.1134/1.1129876
dc.identifier.relatedurlhttp://link.springer.com
dc.identifier.urihttps://hdl.handle.net/20.500.14352/59160
dc.issue.number3
dc.journal.titlePhysics of the Solid State
dc.language.isoeng
dc.page.final396
dc.page.initial392
dc.publisherAmer Inst Physics
dc.relation.projectID93079
dc.relation.projectID96-03-32068a
dc.relation.projectIDPB 93-1256
dc.relation.projectIDMAT 95-1184E
dc.relation.projectIDHTECH.LG941034
dc.rights.accessRightsrestricted access
dc.subject.cdu538.9
dc.subject.keywordOxygen-Loss
dc.subject.keywordCathodoluminescence
dc.subject.keywordYba2cu3o7-X
dc.subject.keywordTc
dc.subject.ucmFísica de materiales
dc.titleStructural and composition changes in superconducting ceramics locally irradiated by electrons
dc.typejournal article
dc.volume.number39
dspace.entity.typePublication
relation.isAuthorOfPublicationb1b44979-3a0d-45d7-aa26-a64b0dbfee18
relation.isAuthorOfPublication68dabfe9-5aec-4207-bf8a-0851f2e37e2c
relation.isAuthorOfPublication.latestForDiscoveryb1b44979-3a0d-45d7-aa26-a64b0dbfee18
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