| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1295897 | Solid State Ionics | 2013 | 5 Pages |
•First-order structural phase transition from Pbnm to R 3¯с structure takes place in the LSGMn-05 at 340 K.•Four domains separated by W-type twin walls (211), (101) and (110) occur in the rhombohedral LSGMn-05.•The reversibility of the domain structure in the LSGMn-05 is probably caused by the memory of microstrains.
The structure of perovskite-type La0.95Sr0.05Ga0.95Mn0.05O3-x crystals has been investigated using high-resolution X-ray powder diffraction technique in the temperature range of 298–1173 К. A transition from orthorhombic (Pbnm) to rhombohedral (R 3¯с) phase has been detected near 340 K. A chevron-like configuration of ferroelastic domain structure was observed in rhombohedral La0.95Sr0.05Ga0.95Mn0.05O3-x crystal using the Laue technique. The chevron-like pattern is formed by the intersection of W-type domain walls (211), (101) and (110) and demonstrates the reversibility of this domain wall structure configuration at thermal cycling through the phase transition point.
