Study of the oxygen incorporation and diffusion in Sr(Ti 0.65Fe0.35)O3 ceramics

Argirusis, C; Jomard, F; Wagner, SF; Menesklou, W; Ivers-Tiffee, E

dc.contributor.author	Argirusis, C	en
dc.contributor.author	Jomard, F	en
dc.contributor.author	Wagner, SF	en
dc.contributor.author	Menesklou, W	en
dc.contributor.author	Ivers-Tiffee, E	en
dc.date.accessioned	2014-03-01T02:47:29Z
dc.date.available	2014-03-01T02:47:29Z
dc.date.issued	2011	en
dc.identifier.issn	0167-2738	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33170
dc.subject	Kinetics	en
dc.subject	Resistive-type oxygen sensor	en
dc.subject	Strontium titanate	en
dc.subject	Surface transfer	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	B-site substitution	en
dc.subject.other	Ceramic solid solutions	en
dc.subject.other	Conductometric gas sensors	en
dc.subject.other	Conductometrics	en
dc.subject.other	Dense ceramics	en
dc.subject.other	High temperature	en
dc.subject.other	Mixed conductors	en
dc.subject.other	Oxygen incorporation	en
dc.subject.other	Oxygen membranes	en
dc.subject.other	Oxygen surface exchange	en
dc.subject.other	Oxygen tracers	en
dc.subject.other	Resistive type	en
dc.subject.other	Surface transfer	en
dc.subject.other	Temperature range	en
dc.subject.other	Tracer diffusion	en
dc.subject.other	Tracer exchange	en
dc.subject.other	Ceramic materials	en
dc.subject.other	Diffractive optics	en
dc.subject.other	Gas detectors	en
dc.subject.other	High temperature applications	en
dc.subject.other	Ion exchange	en
dc.subject.other	Light metals	en
dc.subject.other	Metallic compounds	en
dc.subject.other	Oxygen sensors	en
dc.subject.other	Secondary ion mass spectrometry	en
dc.subject.other	Sensors	en
dc.subject.other	Single crystals	en
dc.subject.other	Strontium	en
dc.subject.other	Strontium titanates	en
dc.subject.other	Surface reactions	en
dc.subject.other	Oxygen	en
dc.title	Study of the oxygen incorporation and diffusion in Sr(Ti 0.65Fe0.35)O3 ceramics	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/j.ssi.2010.02.016	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ssi.2010.02.016	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	For applications in high temperature fast conductometric gas sensors and oxygen membranes, several mixed conductors show promising features. In particular, acceptor-doped strontium titanate (STO) has been widely investigated for an application as a fast conductometric oxygen sensor. By a B-site substitution with 35% iron, the resulting ceramic solid solution SrTi0.65Fe0.35O3 (STF35) exhibits a temperature-independent conductivity, an ideal prerequisite for a gas sensor. In the presented study, the oxygen tracer exchange behavior and the tracer diffusion of dense ceramic STF35 bulks have been investigated in the temperature range between 600 and 900 degrees C by means of O-18(2) tracer exchange experiments and subsequent secondary ion mass spectrometry (SIMS), resulting in the determination of k* and D* values, respectively. Furthermore, by coating the samples with a thin alkaline earth metal oxide layer (CaO). a significantly enhanced oxygen surface exchange reaction was observed. These findings are in good agreement with previous results on STO single crystals. (C) 2010 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Solid State Ionics	en
dc.identifier.doi	10.1016/j.ssi.2010.02.016	en
dc.identifier.isi	ISI:000292848800004	en
dc.identifier.volume	192	en
dc.identifier.issue	1	en
dc.identifier.spage	9	en
dc.identifier.epage	11	en