Abstract
Using high-quality barium titanate single crystals, its microscopic and macroscopic symmetries were investigated by a Raman scattering and a polarizing microscope, respectively. Their temperature dependences were also studied through Curie temperature. The microscopic symmetry of P4mm observed at 21.7 °C did not change through Curie temperature. On the other hand, the macroscopic symmetry was P4mm below 133.0 °C while that was Pm3m above 133.0 °C. This difference between the microscopic and macroscopic symmetries above Curie temperature suggested that the barium titanate above 133.0 °C has intrinsically some disordered behavior. We proposed the model, that the flipping behavior of the polar vector can be origin of the disordered behavior.
| Original language | English |
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| Pages | 487-490 |
| Number of pages | 4 |
| Publication status | Published - 1998 Dec 1 |
| Event | Proceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI) - Montreaux, Switz Duration: 1998 Aug 24 → 1998 Aug 27 |
Other
| Other | Proceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI) |
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| City | Montreaux, Switz |
| Period | 98/8/24 → 98/8/27 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering