Growth of NBT template particles through topochemical microcrystal conversion and their structural characterization

Dursun, Sinan and Mensur-Alkoy, Ebru and Sabuncu, Abdulsamet and Berksoy-Yavuz, Ayşe and Gülgün, Mehmet Ali and Alkoy, Sedat (2017) Growth of NBT template particles through topochemical microcrystal conversion and their structural characterization. Journal of the American Ceramic Society, 100 (3). pp. 937-944. ISSN 0002-7820 (Print) 1551-2916 (Online)

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In this study, uniform rectangular plate-like perovskite Na0.5Bi0.5TiO3 templates were obtained by molten salt synthesis method in three steps. Perovskite plate-like Na0.5Bi0.5TiO3 templates were synthesized from bismuth-layered Na0.5Bi4.5Ti4O15 by topochemical microcrystal conversion method at the third and final step. The most important point was that the plate-like morphology remained as desired, but templates were obtained in cubic perovskite structure. The Na2CO3 excess in the third step was the main controlling parameter. The crystalline orientation of the particles was investigated by electron backscatter diffraction analysis. The results indicated that the particles are single crystalline in nature. In the case of the 90mol% excess of the stoichiometric Na2CO3 ratio, the NBT platelets had highly regular, rectangular prismatic morphology and single-crystal nature. The structure was also confirmed through high-resolution transmission electron microscope and selected area electron diffraction analysis.
Item Type: Article
Uncontrolled Keywords: grain growth; molten salt synthesis; Na0.5Bi0.5TiO3 templates; perovskite; topochemical microcrystal conversion (TMC)
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Depositing User: Mehmet Ali Gülgün
Date Deposited: 15 May 2017 15:33
Last Modified: 15 May 2017 15:33

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