Effect of Al2O3 dopant on abnormal grain growth in BaTiO3

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The effect of additions of up to 1 mol% Al2O3 on abnormal grain growth in BaTiO3 has been studied. For samples sintered at temperatures <= 1250 degrees C addition of 0.1 mol% Al2O3 increases the number density of abnormal grains, with further additions reducing the number density. For samples sintered at 1350 degrees C, addition of Al2O3 caused the primary abnormal grain size to decrease and then increase. The results are explained by considering the effect of Al2O3 addition on the TiO2 content of grain boundaries. (c) 2005 Elsevier Ltd. All rights reserved.
Publisher
ELSEVIER SCI LTD
Issue Date
2005
Language
English
Article Type
Article; Proceedings Paper
Keywords

POSITIVE TEMPERATURE-COEFFICIENT; BARIUM-TITANATE; RESISTIVITY; CERAMICS; BEHAVIOR; TIO2; SIO2

Citation

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, v.25, no.12, pp.2033 - 2036

ISSN
0955-2219
URI
http://hdl.handle.net/10203/89074
Appears in Collection
STP-Journal Papers(저널논문)MS-Journal Papers(저널논문)
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