Two-phase separation in epitaxial (001) SrTiO3 thin films on LaAlO3 substrates
Publication Type | Report
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Authors | |
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Abstract |
An epitaxial (001) SrTiO3 thin film, pulsed laser deposited on a LaAlO3 substrate, has been investigated using analytical transmission electron microscopy and x-ray diffraction. The film contained two different phases, with sharp compositional boundaries between the phases. One phase was 18% Sr-deficient, exhibited a columnar subgrain morphology, and had a large spread in the lattice parameter values. The other phase was stoichiometric SrTiO3, single crystalline, and defect-free. The results show that film stoichiometry is important if interfacial strain and columnar growth is to be avoided. A Sr-rich target and high-temperature annealing are two suggested precautions to improve homogeneity and stoichiometry.
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Notes |
cited By 0
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Series Title |
Doktorsavhandlingar vid Chalmers Tekniska Hogskola
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Year of Publication |
1998
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Document Number |
1414
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Pagination |
1-6
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Institution |
Chalmers Tekniska Hogskola, Goteborg, Sweden
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Report Number |
0346718X
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Keywords | |
Research Areas | |
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