التفاصيل البيبلوغرافية
| العنوان: |
Structure and microstructure of epitaxial SrnFenO3n-1 films. |
| المؤلفون: |
Lebedev, O. I.1 oleg.lebedev@ua.ac.eb, Verbeeck, J.1, Van Tendeloo, G.1, N. Hayashi2, T. Terashima3, M. Nakano3 |
| المصدر: |
Philosophical Magazine. 12/21/2004, Vol. 84 Issue 36, p3825-3841. 17p. |
| مصطلحات موضوعية: |
*IRON, *THIN films, *EPITAXY, *STRONTIUM ores, *STRONTIUM, *ELECTRON microscopy, *COPPER oxide, *METALLIC oxides, *PULSED laser deposition, *COATING processes |
| مستخلص: |
Thin films of SrFeO3-x (0≤x≤0.5) (SFO) grown on a (LaAlO3)0.3 SrAl0.5Ta0.5O3)0.7 (LSAT) substrate by pulsed laser deposition have been structurally investigated by electron diffraction and high resolution transmission electron microscopy for different post-deposition oxygen treatments. During the deposition and post-growth oxidation, the oxygen-reduced SFO films accept extra oxygen along the tetrahedral layers to minimize the elastic strain energy. The oxidation process stops at a concentration SFO2.875 and/or SFO2.75 because zero misfit with the LSAT substrate is reached. A possible growth mechanism and phase transition mechanism are suggested. The non-oxidized films exhibit twin boundaries having a local perovskite-type structure with a nominal composition close to SFO3. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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