2010年2月8日
Growth and characterization of bismuth magnesium titanate Bi(Mg 1/2Ti1/2)O3
Key Engineering Materials
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- 巻
- 421-422
- 号
- 開始ページ
- 3
- 終了ページ
- 8
- DOI
- 10.4028/www.scientific.net/KEM.421-422.30
A new oxide, Bi(Mg1/2Ti1/2)O3 was prepared using a high-pressure high-temperature technique at 8 GPa and 1000°C. As-sintered Bi(Mg1/2Ti1/2)O3 has the BiFeO 3-type perovskite structure with the rhombohedral R3c. After ground, crystal structure changed to tetragonal P4mm. Structure parameters of tetragonal Bi(Mg1/2Ti1/2)O3 were refined from laboratory X-ray powder diffraction data (a = 4.033(10) Å, and c = 3.938(10) Å). Bi(Mg1/2Ti1/2)O3 does not decompress at ambient pressure, but the structure changed from rhombohedral to tetragonal on heating above 800° C. This phase transition was nonreversible. Bi(Mg 1/2Ti1/2)O3 is expected to be one of the end members of lead-free ferroelectric materials. © (2010) Trans Tech Publications.
- リンク情報
- ID情報
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- DOI : 10.4028/www.scientific.net/KEM.421-422.30
- ISSN : 1013-9826
- SCOPUS ID : 75749117528