Ca doped YBCO on the Ba site

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dc.contributor.author Leventouri, Th en
dc.contributor.author Soifer, GA en
dc.contributor.author Calamiotou, M en
dc.contributor.author Perdikatsis, V en
dc.contributor.author Liarokapis, E en
dc.date.accessioned 2014-03-01T01:10:50Z
dc.date.available 2014-03-01T01:10:50Z
dc.date.issued 1995 en
dc.identifier.issn 0896-1107 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/11464
dc.subject Ca substitutions en
dc.subject new phase en
dc.subject superconductors en
dc.subject.classification Physics, Applied en
dc.subject.classification Physics, Condensed Matter en
dc.subject.other Barium en
dc.subject.other Calcium en
dc.subject.other Composition en
dc.subject.other Crystal structure en
dc.subject.other Doping (additives) en
dc.subject.other Substitution reactions en
dc.subject.other X ray diffraction en
dc.subject.other Yttrium compounds en
dc.subject.other Barium site en
dc.subject.other Bragg peaks en
dc.subject.other Concentration effect en
dc.subject.other Microprobe analysis en
dc.subject.other Two phase system en
dc.subject.other X ray diffraction pattern en
dc.subject.other Yttrium barium cuprate en
dc.subject.other Yttrium calcium cuprate en
dc.subject.other Oxide superconductors en
dc.title Ca doped YBCO on the Ba site en
heal.type journalArticle en
heal.identifier.primary 10.1007/BF00727448 en
heal.identifier.secondary http://dx.doi.org/10.1007/BF00727448 en
heal.language English en
heal.publicationDate 1995 en
heal.abstract The effect of partial, nominal replacement of Ba with Ca on the properties of the YBa2Cu3O6+gd superconductor varies with the concentration of Ca. For nominal concentrations in Ca up to 50% a two phase system is formed: the known superconducting phase Y1-yCayBa2Cu3O6+δ and a new, non superconducting phase of composition Y1.14Ca1.58Cu3.27O6.45. The x-ray diffraction pattern of this new phase matches the Bragg peaks, as well as the commensurate and incommensurate peaks of a partially indexed pattern of the phase Y2-xCa2+xCu5O10. For nominal Ca concentrations 40 and 50%, microprobe analysis shows that the superconducting phase becomes a mixture of Y1-yCayBa2Cu3O6+° and YBa1.8Ca0.2Cu3O6.5, where Ca enters the structure in the Ba site. The microraman spectra indicate a small substitution of Ba by Ca, while the new phase shows novel characteristics. © 1995 Plenum Publishing Corporation. en
heal.publisher Kluwer Academic Publishers-Plenum Publishers en
heal.journalName Journal of Superconductivity en
dc.identifier.doi 10.1007/BF00727448 en
dc.identifier.isi ISI:A1995RX14100030 en
dc.identifier.volume 8 en
dc.identifier.issue 5 en
dc.identifier.spage 625 en
dc.identifier.epage 626 en

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