MIXED ELECTRONIC/IONIC CONDUCTIVITY OF THE SOLID-SOLUTION LA(1-X)SRXCO(1-Y)NIYO3-DELTA (X= 0.4, 0.5, 0.6 AND Y= 0.2, 0.4, 0.6)

FTIKOS, C; CARTER, S; STEELE, BCH

dc.contributor.author	FTIKOS, C	en
dc.contributor.author	CARTER, S	en
dc.contributor.author	STEELE, BCH	en
dc.date.accessioned	2014-03-01T01:42:13Z
dc.date.available	2014-03-01T01:42:13Z
dc.date.issued	1993	en
dc.identifier.issn	0955-2219	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/23717
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.other	PEROVSKITE-TYPE OXIDES	en
dc.subject.other	TRANSPORT-PROPERTIES	en
dc.subject.other	OXYGEN PERMEATION	en
dc.subject.other	DEFECT STRUCTURE	en
dc.subject.other	FUEL-CELLS	en
dc.subject.other	ELECTRODES	en
dc.subject.other	SYSTEM	en
dc.subject.other	LACOO3	en
dc.subject.other	ION	en
dc.title	MIXED ELECTRONIC/IONIC CONDUCTIVITY OF THE SOLID-SOLUTION LA(1-X)SRXCO(1-Y)NIYO3-DELTA (X= 0.4, 0.5, 0.6 AND Y= 0.2, 0.4, 0.6)	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1993	en
heal.abstract	The effect of Sr and Ni substitution on the mixed electronic/ionic conductivity was investigated in a series of the perovskite-type oxides La(1-x)SrxCo(1-y)NiyO3-delta(x:0.4, 0.5, 0.6 and y:0.2, 0.4, 0.6) prepared. Electrical conductivity was measured, in air, by a four-point probe technique, within the temperature range 500-1000-degrees-C Oxygen self-diffusion coefficient (D*), activation energy (E(a)), and surface exchange (k) data were obtained, by combining the isotopic O-18/O-16 exchange diffusion profile (IEDP) technique, at 700, 800 and 900-degrees-C, with the secondary ion mass spectroscopy (SIMS) technique for the O-18 depth profile measurement. The results derived suggest that the present perovskite-type oxides are excellent mixed conductors, having high electronic conductivity in addition to their high O-2- self-diffusivity. Oxygen flux through the material was principally controlled by the surface exchange kinetics. As far as the effect of Sr and Ni substitution on the electrical properties is concerned, a strong interdependence was found between the dopant's content.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY	en
dc.identifier.isi	ISI:A1993LN97500008	en
dc.identifier.volume	12	en
dc.identifier.issue	1	en
dc.identifier.spage	79	en
dc.identifier.epage	86	en