Transmission electron microscope examination of Ba2TiSi2O8 has revealed a new incommensurate phase. The incommensurate reflections occur along 〈100〉, and in the h k 1 2 level. At elevated temperatures the incommensurate reflections disappear; it is suggested that the property anomalies previously reported in this material at 160°C are due to the onset of the incommensuration. Differences and similarities with other related compounds are discussed.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Materials Chemistry