Wide-range strain tunability provided by epitaxial LaAl1−xScxO3 template films

The dielectric diamagnetic LaAl1− xScxO3 (LASO) (x=0–1) is proposed for adjusting of the biaxial in-plane lattice parameter of oxide substrates in the wide range from 3.79 to 4.05 Å (6.5%). This range includes the pseudocubic lattice parameters of most of the currently investigated complex oxides. The in-plane lattice parameter of strain-relaxed LASO films depends linearly on the composition, and these films grow with a smooth surface. On several different LASO-buffered substrates, ferromagnetic La0.7Sr0.3MnO3 (LSMO) films have been grown in predetermined strain states. A series of 30 nm thick LSMO films on LASO-buffered LaSrAlO4(001) demonstrates that continuously controlled coherent strains in a wide range, in this case from − 1 to +0.6%, can be obtained for the functional oxide films grown on LASO.

Keywords

Buffered substrates, Coherent strain, Complex oxides, Functional oxide films, In-plane lattice parameters, Lattice parameters, LSMO films, Oxide substrates, Pseudocubic, Smooth surface, Strain state, Strain-relaxed, Template films, Tunabilities

URI

https://doi.org/10.34657/1710
https://oa.tib.eu/renate/handle/123456789/4379

Citation

Herklotz, A., Biegalski, M. D., Kim, H.-S., Schultz, L., Dörr, K., & Christen, H. M. (2010). Wide-range strain tunability provided by epitaxial LaAl1−xScxO3 template films. 12. https://doi.org//10.1088/1367-2630/12/11/113053

Collections

Physik

License

CC BY-NC-SA 3.0 Unported

https://creativecommons.org/licenses/by-nc-sa/3.0/

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