Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
Volume 39, Issue 9B, Pages 5683-5686Publisher
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/JJAP.39.5683
Keywords
particle-size dependence; BaTiO3; particle size of phase transformation
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The particle size dependence of BaTiO3 powder was investigated from the viewpoint of the crystal phase. The crystal phase of BaTiO3 powder was transformed from tetragonal to cubic at a critical particle size of 0.1 mum at room temperature. With decreasing particle size, the Ba ions in the BaTiO3 structure were absent at the surface, and these disordered surface areas increased in small-particle-size BaTiO3 powders and exhibited particle-size dependence.
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