Phase Transition and Physical Features of Nano-Grained BaTiO3 Ceramics Prepared by Two-Step Sintering
Nano-grained BaTiO3 ceramics were prepared by two-step sintering; nanoscale BaTiO3 powders of 100 and 500 nm in size were used as starting materials. The phase transition and physical features of the BaTiO3 ceramics were investigated as a function of the grain size and the boundary decoration. With increasing the grain size, the relative volume fraction of a tetragonal phase was increased; this seems to be due to the variation in boundary tension with grain size. The relation of the physical features of the nano-grained BaTiO3 ceramics with the structural variation is discussed in terms of process parameters.
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Document Type: Research Article
Publication date: February 1, 2009
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