Texture, strains, and superconductivity in Y1-xPrxBa2Cu3O7-δ

Palles, D; Lampakis, D; Siranidi, E; Liarokapis, E; Gantis, A; Calamiotou, M

dc.contributor.author	Palles, D	en
dc.contributor.author	Lampakis, D	en
dc.contributor.author	Siranidi, E	en
dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Gantis, A	en
dc.contributor.author	Calamiotou, M	en
dc.date.accessioned	2014-03-01T01:27:23Z
dc.date.available	2014-03-01T01:27:23Z
dc.date.issued	2007	en
dc.identifier.issn	0921-4534	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18424
dc.subject	Phase separation	en
dc.subject	Y1-xPrxBa2Cu3O6+y	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Phase separation	en
dc.subject.other	Polycrystalline materials	en
dc.subject.other	Textures	en
dc.subject.other	X ray diffraction	en
dc.subject.other	Yttrium alloys	en
dc.subject.other	Critical temperature	en
dc.subject.other	Magnetic measurements	en
dc.subject.other	Micro-Raman studies	en
dc.subject.other	Polycrystalline compounds	en
dc.subject.other	Superconductivity	en
dc.title	Texture, strains, and superconductivity in Y1-xPrxBa2Cu3O7-δ	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.physc.2007.03.307	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.physc.2007.03.307	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	We investigate the Y1-xPrxBa2Cu3O7-delta (0 <= 1 x <= 1) and YBa2-yPryCu3O7-delta (y = 0.1 and 0.2) polycrystalline compounds via X-ray diffraction and Raman measurements. The oxygen concentration measurements show all samples to be optimally doped or overdoped. The magnetic measurements M(Y) and chi(ac)(T) verify that the increase of the Pr content leads to the expected strong systematic decrease of the critical temperature T-c and the suppression of superconductivity for x > 0.55. Systematic micro-Raman studies of the observed vibrational modes reveal a coexistence of locally different rare-earth seemingly nanoscopic environments in the mixed rare-earth Y123 systems that has been overlooked to a great extent up to now. The comparison of the Raman spectra from the two sets of compounds proves that an increased amount of Ba is occupied by Pr in Y1-xPrxBa2Cu3O7-delta and indicates that loss of superconductivity is mainly due to hole filling by this occupancy. (c) 2007 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Physica C: Superconductivity and its Applications	en
dc.identifier.doi	10.1016/j.physc.2007.03.307	en
dc.identifier.isi	ISI:000249870600097	en
dc.identifier.volume	460-462 II	en
dc.identifier.issue	SPEC. ISS.	en
dc.identifier.spage	922	en
dc.identifier.epage	924	en