Plate-like Na0.5Bi0.5TiO3template synthesized by a topochemical method

J. T. Zeng, Kin Wing Kwok, W. K. Tam, H. Y. Tian, X. P. Jiang, H. L.W. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

42 Citations (Scopus)

Abstract

Large plate-like Na0.5Bi0.5TiO3(NBT) templates have been successfully synthesized from bismuth layer-structured ferroelectric Na0.5Bi4.5Ti4O15(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 (Na2CO3, and TiO2) 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.
Original languageEnglish
Pages (from-to)3850-3853
Number of pages4
JournalJournal of the American Ceramic Society
Volume89
Issue number12
DOIs
Publication statusPublished - 1 Dec 2006

ASJC Scopus subject areas

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

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