The concentration-dependent diffusion coefficient for proton-lithium counter-diffusion is studied in this paper. Depth profiles of the proton concentration for proton-exchanged LiNbO3 were measured by secondary ion mass spectroscopy (SIMS). The concentration-dependent diffusion coefficient for the proton-lithium counter-diffusion was calculated by the Boltzmann-Matano method and the relationships between the diffusion coefficient, the proton-exchange process, and the crystal phases in proton-exchanged LiNbOs were examined. To confirm the validity of the diffusion coefficient calculated from the SIMS data, the depth profiles of the proton concentrations were numerically computed with the calculated diffusion coefficient and the exponential dependence of the diffusion coefficient on the content of lithium benzoate for dilution was reproduced.
|Number of pages||6|
|Journal||Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers|
|Publication status||Published - 1997 Nov 1|
- Diffusion coefficient
- Proton exchange
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)