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Accession number;06A0382472
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| Title;Finding of a New Ferroelectric Barium Dititanate BaTi2O5 (BT2) and its Crystal Structure |
| Author;
GOTO TAKASHI
(Tohoku Univ., Inst. Materials Res., JPN)
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Journal Title;Journal of the Crystallographic Society of Japan
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Journal Code:G0232A
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ISSN:0369-4585
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VOL.48;NO.2;PAGE.121-126(2006)
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| Figure&Table&Reference;FIG.12, REF.18 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Barium titanates have been widely studied due to their useful dielectric properties; however, the phase diagram of the BaO-TiO2 system has not been well understood. This paper briefly reviewed the study on the phase diagram for the BaO-TiO2 system particularly in the BaTi2O5 (BT2)-related region. BT2 has been long understood as a paraelectric phase belonging to the space group of C2/m. However, BT2 single crystal prepared by a floating-zone method exhibits significant ferroelectricity in the b-direction, contradicting to the symmetric C2/m. The space group of BT2 could be C2 with monoclinic lattice parameters of a=1.6899nm, b=0.39350nm, c= 0.94105nm and .BETA.=103.103.DEG.. (author abst.) |
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