Cr migration associated with interface electric fields during transient LiNbO3 crystal growth

Satoshi Uda, William A. Tiller

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The role of thermoelectric power and/or charge separation-generated electric fields upon Cr-doped LiNbO3 crystal growth is treated by investigating both steady-state and initial transient solute redistribution based on the concept of a field-modified partition coefficient and an effective growth velocity. The magnitude of these electric field effects is dominated not only by the strength of the field but also by the solute diffusion coefficient in the phase considered. The high diffusion coefficient of Cr3+ in the liquid and the very low diffusion coefficient of Cr3+ in the solid combined with the electric field operating in the liquid leads to a strong pulling force on the Cr3+ from the solid through the interface into the liquid. This generates a deep solute depletion region in the solid behind the interface. An analytical solution to this depletion phenomena is given for a specific case.

Original languageEnglish
Pages (from-to)396-412
Number of pages17
JournalJournal of Crystal Growth
Volume126
Issue number2-3
DOIs
Publication statusPublished - 1993 Jan 2
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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