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Article: Reports from S.N. Yun and co-researchers add new data to research in materials science.
- Article from:
- Electronics Newsweekly
- Article date:
- November 11, 2009
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According to a study from Xian, People's Republic of China, "Bismuth-doped (Ba1-xCax)TiO3 ceramics (x = 0.10, Bi-BCT) were prepared by a conventional solid-state reaction technique. An abnormal double-like hysteresis polarization-electric (P-E) loop was observed at room temperature for aged Bi-BCT."
"Raman scattering gives critical evidence for the formation of O2- vacancies in Bi-BCT. The change from the single P-E loops in the fresh samples to the double loops in the aged samples excludes the existence of a ferroelectric-antiferroelectric transition in Bi-BCT," wrote S.N. Yun and colleagues.
The researchers concluded: "A reversible domain switching ...