Electron microscopic and diffraction study of proton-exchanged LiNbO3
- 1 January 1988
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 77 (1) , 91-100
- https://doi.org/10.1080/00150198808223230
Abstract
The microstructure of proton-exchanged Li1-xHxNbO3 (x = 1) is observed by high-resolution electron microscopy, single crystal electron diffraction and powder X-ray diffraction. Fully-exchanged HNbO3, having perovskite-type structure (space group Pm3m; a = 3.822 Å), may be obtained from fine powders. For single crystal material, another cubic phase Li1-xHxNbO3 is obtained, having a perovskite-related superstructure in space group Im3 (a = 7.645 Å). The structural basis for this phase and the atomic mechanism involved in the proton-exchange reaction may be understood using the concept of chemical twinning and octahedral tilting.Keywords
This publication has 12 references indexed in Scilit:
- Silver-ion-exchanged lithium tantalate: High-resolution electron microscopic studies of intergrowth defect structuresFerroelectrics, 1988
- Silver ion-exchanged lithium tantalate Li1-xAgxTaO3: Identification of perovskite-related phases by electron diffractionFerroelectrics, 1987
- Structural changes with composition and temperature in rhombohedral Li1−xHxNbO3Materials Research Bulletin, 1984
- Damage-resistant LiNbO3 waveguidesJournal of Applied Physics, 1984
- HNbO3: Structure and NMR studySolid State Ionics, 1983
- Proton exchange in LiNbO3Ferroelectrics, 1983
- Chemical twinning and ferroelectric domains in LiTaO3Philosophical Magazine A, 1982
- Topotactic LiNbO3to cubic perovskite structural transformation in LiNbO3and LiTaO3Ferroelectrics, 1981
- Some structures topologically related to cubic perovskite (E21), ReO3 (D09) and Cu3Au (L12)Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1977
- The classification of tilted octahedra in perovskitesActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1972