Journal
PHYSICAL REVIEW B
Volume 86, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.86.214106
Keywords
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Funding
- Ministry of Education, Culture, Sports, Science, and Technology of Japan [20340070]
- Grants-in-Aid for Scientific Research [20340070] Funding Source: KAKEN
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The symmetries of the rhombohedral, orthorhombic, and tetragonal phases of barium titanate (BaTiO3) are investigated using convergent-beam electron diffraction. Nanometer-sized local structures with rhombohedral symmetry are observed in both the orthorhombic and tetragonal phases. This indicates that an order-disorder character exists in phase transformations of BaTiO3. The nanostructures in these phases are discussed in terms of an order-disorder model with off-centered Ti in the < 111 > directions.
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