Ca doped YBCO on the Ba site

Leventouri, Th; Soifer, GA; Calamiotou, M; Perdikatsis, V; Liarokapis, E

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