Microstructure and Dielectric Properties of BaTiO₃-Based Ferroelectric Materials

Abstract:

The microstructure and dielectric properties of BaTiO₃-based ceramics and films were investigated. In BaZr_0.2Ti_0.8O₃ ceramics domains with herribone, lamellar and “water-mark” characters are observed and 90◦-domain has not been observed in large grain size sample. It is shown that the average grain size and the remanent polarization of doped BZT ceramics decrease with the increasing of Al content. The dielectric constant and tunability of the BaZr_0.2Ti_0.8O₃ films using inorganic zirconate are 113 and 10.2%, respectively. It is found that nanowires of BaTiO₃ annealed for 2.5 min are very clear-cut, orderly and almost uninterrupted.

• Periodical: Materials Science Forum (Volume 687)
• Pages: 133-137
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.687.133
• Online since: June 2011
• Authors: Chun Lin Fu, Wei Cai, Xiao Ling Deng
• Keywords: Barium Titanate (BT), Doping, Ferroelectric, Film, Nanowire

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