A structural consideration of the defect in LaMnO3 phase around stoichiometric composition
| Autor: | Shunkichi Ueno, Akira Shimono, Hiromi Nakano, Naoki Kamegashira |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Materials science
Process Chemistry and Technology Superlattice Crystal structure Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials Crystallography Electron diffraction Transmission electron microscopy Phase (matter) Materials Chemistry Ceramics and Composites Superstructure (condensed matter) Stoichiometry |
| Zdroj: | Ceramics International. 31:257-259 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2004.05.010 |
| Popis: | The defect structure of LaMnO 3 phase close to its stoichiometric composition was studied by transmission electron microscopy (TEM). The electron diffraction patterns of this phase showed two series of superlattice spots that are forbidden for Pnma (62), the reported symmetry for stoichiometric LaMnO 3 . 0 0 l ( l = odd) such as 0 0 1 and h k 0 ( h = odd) such as 1 0 0 superlattice spots appeared in [1 1 0] and [0 1 1] zone patterns. The low magnification TEM images in [1 1 0] zone showed coherent twins. The twin plane was (1 1 2). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect