Raman scattering as a probe of domains and superstructures in YBCO compounds

Liarokapis, E

dc.contributor.author	Liarokapis, E	en
dc.date.accessioned	2014-03-01T01:15:06Z
dc.date.available	2014-03-01T01:15:06Z
dc.date.issued	1999	en
dc.identifier.issn	0921-4534	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13347
dc.subject	YBCO	en
dc.subject	Raman scattering	en
dc.subject	wavelengths	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Band structure	en
dc.subject.other	Crystal microstructure	en
dc.subject.other	Doping (additives)	en
dc.subject.other	Isotopes	en
dc.subject.other	Magnetic domains	en
dc.subject.other	Oxygen	en
dc.subject.other	Phonons	en
dc.subject.other	Powders	en
dc.subject.other	Raman scattering	en
dc.subject.other	Microcrystallites	en
dc.subject.other	Oxygenation	en
dc.subject.other	Superstructures	en
dc.subject.other	Wavelengths	en
dc.subject.other	Yttrium barium copper oxides	en
dc.title	Raman scattering as a probe of domains and superstructures in YBCO compounds	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0921-4534(99)00067-2	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0921-4534(99)00067-2	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	Based on room temperature micro-Raman measurements carried out in powder samples of (YBa2Cu3Ox)-O-16,18, with 6.4 < x < 7.0 and very homogeneous oxygenation, the formation of domains and microstructures was investigated. By using several excitation wavelengths on the same microcrystallites at least three phases have been found. The deconvolution of all Raman spectra into three bands provides evidence that they originate from discrete phases. The existence of a phase in the overdoped region, discovered from the softening of the in-phase mode, is confirmed for both oxygen isotopes, based on the sudden increase at the optimum doping of the relative Raman scattering intensities of the in-phase to the apex phonons. (C) 1999 Published by Elsevier Science B.V. All rights reserved.	en
heal.publisher	Elsevier Science Publishers B.V., Amsterdam, Netherlands	en
heal.journalName	Physica C: Superconductivity and its Applications	en
dc.identifier.doi	10.1016/S0921-4534(99)00067-2	en
dc.identifier.isi	ISI:000081173100028	en
dc.identifier.volume	317-318	en
dc.identifier.spage	270	en
dc.identifier.epage	275	en