Cation self-diffusion in single crystal MgO
- 1 February 1971
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 23 (182) , 399-408
- https://doi.org/10.1080/14786437108216393
Abstract
Measurements of the self-diffusion of Mg2+ in single crystal MgO of two different purities have been made over the temperature range 1100°C to 1750°C. Above approximately 1300°C the results show direct evidence of the operation of both intrinsic and extrinsic diffusion. Below this temperature precipitation of the non-active impurities present appears to take place. Using the earlier similar but apparently purely intrinisic measurements of Lindner and Parfitt (1957) it is possible to evaluate both the enthalpy of motion for the cation vacancy, H m, and the enthalpy of formation of the complete Schottky defect, H f. The results obtained are: H m = 1·7±0·1 ev; H f = 3·4±0·2 ev.Keywords
This publication has 10 references indexed in Scilit:
- Cation self-diffusion in single crystal CaOJournal of Physics and Chemistry of Solids, 1969
- The diffusion of barium in magnesium oxidePhilosophical Magazine, 1967
- Self-Diffusion of Beryllium in Polycrystalline Beryllium OxideJournal of the American Ceramic Society, 1967
- Reactions between Vacancies and Impurities in Magnesium Oxide. I. Cr3+-Ion ImpuritiesThe Journal of Chemical Physics, 1967
- Reactions between Vacancies and Impurities in Magnesium Oxide. II. Mn4+-Ion and OH−-Ion ImpuritiesThe Journal of Chemical Physics, 1967
- The diffusion of calcium in magnesium oxidePhilosophical Magazine, 1966
- Impurity Distribution in MgOJournal of the American Ceramic Society, 1966
- Origin of Grain-Boundary Diffusion in MgOJournal of the American Ceramic Society, 1966
- Diffusion of Radioactive Magnesium in Magnesium Oxide CrystalsThe Journal of Chemical Physics, 1957
- Formation Energy of Lattice Defect in Simple Oxide CrystalsJournal of the Physics Society Japan, 1954