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Transmission electron microscopy study of epitaxial lanthanum-manganite thin films on SrTiO3.
- Source :
-
Philosophical Magazine B . Jun99, Vol. 79 Issue 6, p897-909. 13p. - Publication Year :
- 1999
-
Abstract
- The microstructure of lanthanum manganite (La1-xMnO3-delta) thin film on strontium titanate (SrTiO3) substrate fabricated by liquid chemical vapour deposition has been studied by transmission electron microscopy. Both La1-xMnO3-delta and SrTiO3 have a perovskite structure with lattice misfit about 1% but there is no evidence for correlation of the density of the misfit dislocation and misfit. In the vicinity of the interface between La1-xMnO3-delta and SrTiO3, the misfit is accommodated by a distortion of the lattice of La1-xMnO3-delta. At the areas not adjacent to the interface of La1-xMnO3-delta-SrTiO3, small particles, which can be identified as MnO, are found to be associated with the misfit between La1-xMnO3-delta and SrTiO3. The MnO phase is unstable with respect to La1-xMnO3-delta. The growth of a thin film of La1-xMnO3-delta on SrTiO3 is epitaxial and an orientation relationship is (100)La1-xMnO3-delta//(100)SrTiO3//(100)MnO and [010]La1-xMn03-delta//[010]SrTi03//[010]Mn0. The interface of La1-xMnO3-delta-SrTiO3 is composed of Ti and Mn atoms plus oxygen. [ABSTRACT FROM AUTHOR]
- Subjects :
- *THIN films
*EPITAXY
*TRANSMISSION electron microscopy
Subjects
Details
- Language :
- English
- ISSN :
- 13642812
- Volume :
- 79
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Philosophical Magazine B
- Publication Type :
- Academic Journal
- Accession number :
- 4215302
- Full Text :
- https://doi.org/10.1080/13642819908214848