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Phase Transition and Physical Features of Nano-Grained BaTiO3 Ceramics Prepared by Two-Step Sintering

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Abstract:

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.

Keywords: BATIO3; NANO-GRAINED CERAMICS; PHASE TRANSITION

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.C192

Publication date: February 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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