Effects of Lattice Constant and Sintering Atmosphere on Substitution of Sn2+ Ions at Ba Site in (Ba,Ca)TiO3 Perovskites: Experimental and Theoretical Studies

The Sn 2+ substitution into the Ba site in BaTiO 3 -based perovskites was experimentally and theoretically investigated. We clarified two factors promoting the Sn 2+ substitution: the sintering partial pressure of oxygen ($p$O 2 ) and the lattice size of BaTiO 3 . We found the optimum region of sint...

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Bibliographic Details
Published in:Jpn J Appl Phys 2011-09, Vol.50 (9), p.09NC11-09NC11-4
Main Authors: Suzuki, Shoichiro, Honda, Atsushi, Higai, Shin'ichi, Ando, Akira, Wada, Nobuyuki, Takagi, Hiroshi
Format: Article
Language:eng ; jpn
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Summary:The Sn 2+ substitution into the Ba site in BaTiO 3 -based perovskites was experimentally and theoretically investigated. We clarified two factors promoting the Sn 2+ substitution: the sintering partial pressure of oxygen ($p$O 2 ) and the lattice size of BaTiO 3 . We found the optimum region of sintering $p$O 2 , where a high tetragonality and a high temperature of transition from the ferroelectric phase to the paraelectric phase are realized. It was also found that decreasing lattice size by Ca doping is effective for substituting Sn 2+ into the Ba site in BaTiO 3 . These results provide insights for exploring new ceramics containing Sn 2+ that possess better ferroelectric properties.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.50.09NC11