Effect of Sr-doping on the structural and electrical properties of gadolinium manganite oxide

Kostogloudis, GCh; Ftikos, Ch

dc.contributor.author	Kostogloudis, GCh	en
dc.contributor.author	Ftikos, Ch	en
dc.date.accessioned	2014-03-01T01:14:33Z
dc.date.available	2014-03-01T01:14:33Z
dc.date.issued	1999	en
dc.identifier.issn	0022-2461	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13141
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Activation energy	en
dc.subject.other	Crystal structure	en
dc.subject.other	Electric conductivity of solids	en
dc.subject.other	Lattice constants	en
dc.subject.other	Manganese	en
dc.subject.other	Mathematical models	en
dc.subject.other	Perovskite	en
dc.subject.other	Strontium	en
dc.subject.other	X ray powder diffraction	en
dc.subject.other	Gadolinium manganite oxide	en
dc.subject.other	Strontium doping	en
dc.subject.other	Unit cell	en
dc.subject.other	Gadolinium compounds	en
dc.title	Effect of Sr-doping on the structural and electrical properties of gadolinium manganite oxide	en
heal.type	journalArticle	en
heal.identifier.primary	10.1023/A:1004536532034	en
heal.identifier.secondary	http://dx.doi.org/10.1023/A:1004536532034	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	The crystal structure and electrical conductivity of the perovskite oxide system Gd1-xSrxMnO3+/-delta (x = 0-0.5) were investigated. The effect of the level of Sr-doping on these properties was examined. An orthorhombic GdFeO3-type structure (space group Pbnm) was found for all oxides. The room temperature lattice parameters were determined from the XRD data. A large distortion of the unit cell was observed in the case of the undoped compound. The distortion was gradually reduced with increasing Sr content. The unit cell volume decreased on Sr-doping. The electrical conductivity of the oxides was measured from room temperature up to 800 degrees C. The small polaron hopping conductivity model can adequately describe the electrical conductivity behavior. The activation energy decreases as x increases. (C) 1999 Kluwer Academic Publishers.	en
heal.publisher	Kluwer Academic Publishers, Dordrecht, Netherlands	en
heal.journalName	Journal of Materials Science	en
dc.identifier.doi	10.1023/A:1004536532034	en
dc.identifier.isi	ISI:000080387600023	en
dc.identifier.volume	34	en
dc.identifier.issue	9	en
dc.identifier.spage	2169	en
dc.identifier.epage	2173	en