Boschker, J.E., Monsen, Å.F., Nord, M., Mathieu, R., Grepstad, J.K., Holmestad, R., Wahlström, E. and Tybell, T. (2013) In-plane structural order of domain engineered La0.7Sr0.3MnO3thin films. Philosophical Magazine, 93(13), pp. 1549-1562. (doi: 10.1080/14786435.2012.747010)
Full text not currently available from Enlighten.
Abstract
We present a detailed structural study of tensile-strained La0.7Sr0.3MnO3 thin films. We use the substrate miscut to control the number of rhombohedral variants in the films and study the in-plane order and structural distortions. Using high-resolution X-ray diffraction, we demonstrate that step-edge induced lattice modulations occur in 4-variant films, whereas periodic twinning is the dominant in-plane order for 2-variant films. We show that the in-plane twinning angle is almost completely relaxed. However, the relaxation of shear strain by the out-of-plane twinning angle and the monoclinic distortion is only partial. Furthermore, the film thickness dependence of the domain width reveals that domain formation is a universal mechanism for shear strain relaxation. Finally, we show that the structural response to the transition from the paramagnetic to the ferromagnetic phase of La0.7Sr0.3MnO3 at 345 K is smaller in 4-variant films compared to 2-variant films.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Nord, Dr Magnus |
| Authors: | Boschker, J.E., Monsen, Å.F., Nord, M., Mathieu, R., Grepstad, J.K., Holmestad, R., Wahlström, E., and Tybell, T. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Philosophical Magazine |
| Publisher: | Taylor & Francis |
| ISSN: | 1478-6435 |
| ISSN (Online): | 1478-6443 |
| Published Online: | 29 November 2012 |
University Staff: Request a correction | Enlighten Editors: Update this record
Altmetric
Altmetric