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In-plane structural order of domain engineered La 0.7 Sr 0.3 MnO 3 thin films.
- Source :
-
Philosophical Magazine . May2013, Vol. 93 Issue 13, p1549-1562. 14p. - Publication Year :
- 2013
-
Abstract
- We present a detailed structural study of tensile-strained La0.7Sr0.3MnO3thin films. We use the substratemiscutto 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 La0.7Sr0.3MnO3at 345 K is smaller in 4-variant films compared to 2-variant films. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14786435
- Volume :
- 93
- Issue :
- 13
- Database :
- Academic Search Index
- Journal :
- Philosophical Magazine
- Publication Type :
- Academic Journal
- Accession number :
- 87672453
- Full Text :
- https://doi.org/10.1080/14786435.2012.747010