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Please use this identifier to cite or link to this item: http://uyr.uy.edu.mm/handle/123456789/101
dc.contributor.authorMya Theingi
dc.contributor.authorJi, Ma
dc.contributor.authorHui, Zhang
dc.contributor.authorWen-zhang, Wang
dc.contributor.authorJian-hong, Yi
dc.contributor.authorQing-ming, Chen
dc.date.accessioned2016-11-07T17:49:32Z
dc.date.available2016-11-07T17:49:32Z
dc.date.issued2012
dc.identifier.urihttp://uyr.uy.edu.mm/handle/123456789/101
dc.descriptionJournal of Synthetic Crystals 2013-02
dc.description.abstractNanocrystalline powders of manganite perovskite La0.67Ca0.33MnO3 were prepared by a simple sol-gel method at relatively low temperature.Single nanosized perovskite phase can be produced when the dried gel was calcined at the temperature as low as 500 ℃ without any intermediate step that was confirmed by X-ray diffraction.The prepared calcined powders are nanocrystalline up to 900 ℃(particle size ranging from 30 nm to 80 nm).However the crystalline particles are significantly grown(micron-sized grain) after the powders had been pressed into pellets and sintered at 1100 ℃.The morphology of bulk polycrystalline target and their electrical transport measurements were performed by using scanning electron microscope(SEM) and a conventional four probe technique,respectively.Remarkably sharp peaks of the resistivity vs.temperature(ρ-T) curves with insulator-metal transition temperature TIM(around 270 K) can be observed.
dc.subjectsol-gel method
dc.subjectnanocrystalline powders
dc.subjectmanganite perovskite
dc.subjectLa0.67Ca0.33MnO3
dc.titleSynthesis and Characterization of Nanocrystalline La0.67Ca0.33MnO3 Powder by a Simple Sol-gel Metthodlanguage
dc.typearticle


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