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In-plane structural...
In-plane structural order of domain engineered La0.7Sr0.3MnO3 thin films
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Boschker, J. E. (författare)
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Monsen, A. F. (författare)
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Nord, M. (författare)
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- Mathieu, Roland (författare)
- Uppsala universitet,Fasta tillståndets fysik
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Grepstad, J. K. (författare)
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Holmestad, R. (författare)
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Wahlstrom, E. (författare)
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Tybell, T. (författare)
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(creator_code:org_t)
- Informa UK Limited, 2013
- 2013
- Engelska.
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Ingår i: Philosophical Magazine. - : Informa UK Limited. - 1478-6435 .- 1478-6443. ; 93:13, s. 1549-1562
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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 345K is smaller in 4-variant films compared to 2-variant films.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- perovskite
- domain engineering
- low symmetry
- shear strain relaxation
- thin films
- Teknisk fysik med inriktning mot fasta tillståndets fysik
- Engineering Science with specialization in Solid State Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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