Plate-Like Na0.5Bi0.5TiO3Template Synthesized by a Topochemical Method
| Autor: | J. T. Zeng, Hlw L. W. Chan, X.P. Jiang, Kin Wing Kwok, Hy Y. Tian, W. K. Tam |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Bismuth titanate chemistry.chemical_element Mineralogy Ferroelectricity Bismuth chemistry.chemical_compound Template chemistry Chemical engineering visual_art X-ray crystallography Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Electroceramics Perovskite (structure) |
| Zdroj: | Journal of the American Ceramic Society. 89:3850-3853 |
| ISSN: | 1551-2916 0002-7820 |
| DOI: | 10.1111/j.1551-2916.2006.01297.x |
| Popis: | Large plate-like Na 0.5 Bi 0.5 TiO 3 (NBT) templates have been successfully synthesized from bismuth layer-structured ferroelectric Na 0.5 Bi 4.5 Ti 4 O 15 (NBIT) particles by the topochemical method. Because of the highly anisotropic structure, plate-like NBIT particles were first synthesized by the molten-salt process. After the topochemical reaction with the complementary reactants (Na 2 CO 3 , and TiO 2 ) in NaCl flux, the layer-structured NBIT particles were transformed to the perovskite NBT templates. The resulting NBT templates are large and of plate-like shape. Our results also reveal that they are more effective in inducing grain orientation in the BNKT-BT ceramics as compared with BIT templates. For a BNKT-BT ceramic textured with 20 wt% of NBT templates, it exhibits a very high degree of grain orientation and gives a large Lotgering factor of 0.89. |
| Databáze: | OpenAIRE |
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