Domain wall dynamics in ferroelastic crystals
- Author(s)
- Wilfried Schranz, Andri V Kityk
- Abstract
Results of ultra-low-frequency dynamic mechanical analysis (Hz-region) measurements of the mixed fluoroperovskite crystals KMn 1 − x Ca x F 3 (x ≤ 0.018) are presented in a wide temperature range including the regions of phase transitions. At low frequencies (0.1 Hz–50 Hz) a giant elastic softening (superelasticity) due to domain wall motion was found in the mixed system quite similar to that observed recently in the isostructural SrTiO 3 . Moreover, the low frequency elastic behaviour in KMn 1 − x Ca x F 3 bears some important new features as compared to SrTiO 3 . For the first time we have measured the freezing of domain wall movement in a certain range of concentration of Ca 2+ ions (x = 0.003).
- Organisation(s)
- Physics of Functional Materials
- External organisation(s)
- Czestochowa University of Technology (CUT)
- Journal
- Ferroelectrics
- Volume
- 375
- Pages
- 178-186
- No. of pages
- 9
- ISSN
- 0015-0193
- Publication date
- 10-2008
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103018 Materials physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/domain-wall-dynamics-in-ferroelastic-crystals(efa80010-f46a-4a02-99cd-064e72f2bce6).html