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

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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 http://hdl.handle.net/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


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