Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/719
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dc.contributor.authorBehera, S K-
dc.contributor.authorSahu, P K-
dc.contributor.authorPratihar, S K-
dc.contributor.authorBhattacharyya, S-
dc.date.accessioned2008-08-13T04:01:22Z-
dc.date.available2008-08-13T04:01:22Z-
dc.date.issued2008-
dc.identifier.citationJournal of Physics and Chemistry of Solids, Vol 69, Iss 8,P 2041-2046en
dc.identifier.urihttp://dx.doi.org/10.1016/j.jpcs.2008.02.019-
dc.identifier.urihttp://hdl.handle.net/2080/719-
dc.descriptionCopyright for the paper belongs to Elsevieren
dc.description.abstractLanthanum aluminate ceramic powders could be prepared by a combined gel precipitation process from metal chlorides using ammonia. A slight modification in the conventional gel precipitation technique was carried out by introducing a step of ultrasonication followed by centrifugal washing of the gel. The dried gels produced pure phase lanthanum aluminate powders on calcination at 1100 °C for the combined gel-precipitated powders, and at 600 °C for the washed gel. The phase evolution was studied and it was found that the delay in obtaining monophasic LaAlO3 in the combined gel-precipitated powder owed to the crystallization of an impure phase LaOCl. This phase was not detected in the washed gel (WG) powders. TEM micrographs showed a uniform morphology for the calcined WG powders, which were in contrast to the irregular particles in the gel-precipitated (GP) powders. The uniform morphology was assigned to the ultrasonic effects during washing of the gel.en
dc.format.extent782678 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoen-
dc.publisherElsevieren
dc.subjectOxidesen
dc.subjectChemical synthesis;en
dc.subjectInfrared spectroscopyen
dc.subjectThermogravimetric analysis (TGA);en
dc.subjectX-ray diffractionen
dc.titlePhase evolution in gel-precipitated LaAlO3 ceramicsen
dc.typeArticleen
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