**This essay discusses recent work on bismuth ferrite**, which reveals theoretically and experimentally a phase transition under stress that does not change symmetry but changes the c/a lattice constant ratio. As shown by Ishibashi, such transitions must be discontinuous and are described by free en
The Ferroic Phase Transitions of BiFeO3
β Scribed by Sverre M. Selbach; Thomas Tybell; Mari-Ann Einarsrud; Tor Grande
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 300 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0935-9648
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π SIMILAR VOLUMES
LaGaO 3 is reported to undergo a low-temperature phase transition from Pnma to R3c at 418 K. The phases involved in the low-temperature phase transition of LaGaO 3 were determined using Raman spectroscopy from 77 to 773 K. There is a total of 17 bands observed in the room temperature (294 K) Raman s
We consider the local behavior of critical points of the functional Here, W is a double-well potential and U is a regular domain in R n , n β₯ 2. Assuming that {u Ξ΅ }Ξ΅>0 is stable for n = 2 and locally energy-minimizing for n = 3, we show that the level sets of solutions converge in an average sense