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- Title
FABRICATION OF LSMO SINGLE LAYERS AND LSMO/YBCO DOUBLE LAYERS.
- Authors
ZHU, HONG; OKADA, MASANORI; KAMIYA, ATSUSHI; SARKAR, AJAY KRISHNO; MATSUI, MASAHITO; SEIKH, MD. MOTIN; ENDO, TAMIO
- Abstract
(La, Sr)MnO3 (LSMO) single-layer and LSMO/YBCO double-layer films have been grown on LAO and MgO substrates using ion beam sputtering. For LSMO single-layer films, the highly epitaxial films can be grown at lower substrate temperatures down to 500°C. The epitaxy of the films, which is degraded with increasing TS, can be restored by supply of plasma oxygen. Smaller lattice mismatch of LSMO on LAO gives two-dimensional step-and-terrace type growth, whereas on MgO grain type growth is observed due to larger mismatch. For the double-layer films, LSMO layer can be grown epitaxially on a-oriented YBCO underlayer, but a part of the underlying a-YBCO is changed into c-YBCO during the deposition of overlayer. For c-YBCO underlayer, a part of the underlying c-YBCO is changed into (110)-oriented phase after the deposition of overlayer. Then it is necessary to deposit the overlayer at lower temperatures.
- Subjects
THIN films; EPITAXY; CRYSTAL growth; NANOSCIENCE; SEMICONDUCTORS
- Publication
International Journal of Nanoscience, 2006, Vol 5, Issue 4/5, p511
- ISSN
0219-581X
- Publication type
Article
- DOI
10.1142/S0219581X06004711