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Ionic transport in LiNbO3

  • Apurva Mehta (a1), Edward K. Chang (a1) and Donald M. Smyth (a1)

The high temperature equilibrium conductivity (950 °C–1050 °C) of congruent LiNbO3 can be resolved into two components: an electronic portion that is dependent on the oxygen partial pressure and an ionic portion that is pressure independent. It is shown that the two components can be obtained from an analysis of the total equilibrium conductivity measured as a function of oxygen partial pressure. The ionic transport number (fractional ionic conductivity) thus obtained is compared with that obtained from an oxygen concentration cell measurement. The two techniques are found to be in excellent agreement, confirming the experimental validity of the defect chemistry method. From the temperature dependence of the ionic conductivity, the activation energy (138 kJ/mol [1.43 eV]) for the ionic transport is obtained. The results are in good agreement with the value previously obtained for the oxygen chemical diffusivity.

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1Fay H., Alford W. J., and Dess H. M., Appl. Phys. Lett. 12, 89 (1968).
2Lerner P., Legras C., and Duman J. P., J. Cryst. Growth 3/4, 231 (1968).
3Abrahams S. C. and Marsh P., Acta Crystallogr. B42, 6168 (1986).
4Chang E. K., Mehta A., and Smyth D. M., Adv. in Ceram. 23, 351 (1987).
5Smyth D. M., Proceedings of the Sixth IEEE Int. Symp. on Application of Ferroelectrics, ISAF '86, 115 (1986).
6Jorgensen P. J. and Bartlett R. W., J. Phys. Chem. Solids 30, 2639 (1969).
7Bergmann G., Solid State Commun. 6, 77 (1968).
8Limb Y., Cheng K. W., and Smyth D. M., Ferroelectrics 38, 813 (1981).
9Chang E. K., Mehta A., and Smyth D. M., Proc. of the Symp. on Electro-ceramics and Solid-state Ionics, edited by Tuller Harry L. and Smyth Donald M. (The Electrochemical Society Proceedings, 1988), Vol. 88–3, p. 35.
10Heyne L., Proceedings of a Symposium, Oct. 22–25, 1967, NBS special publication#296.
11Chan H. M., Zhuang Z., and Smyth D. M., in Defect Properties and Processing of HighTechnology Nonmetallic Materials, edited by Chen Y., Kingery W. D., and Stokes R. J. (Mater. Res. Soc. Symp Proc. 60, Pittsburgh, PA, 1986), p. 95.
12Peterson G. E. and Carnevale A., J. Chem. Phys. 56, 4848 (1972).
13Holmes R. J. and Smyth D. M., J. Appl. Phys. 55 (10), 3531 (1984).
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Journal of Materials Research
  • ISSN: 0884-2914
  • EISSN: 2044-5326
  • URL: /core/journals/journal-of-materials-research
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