Intrinsic LiNbO3 melt species partitioning at the congruent melt composition. III. Choice of the growth parameters for the dynamic congruent-state growth

Satoshi Uda, Kiyoshi Shimamura, Tsuguo Fukuda

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

During crystal growth from a stirred melt, partitioning of the intrinsic LiNbO3 melt species is significantly influenced by the interface electric field caused by the thermoelectric power and the charge separation effects (crystallization EMF) which are a function of growth parameters such as solute boundary layer thickness, δC, growth velocity, V and temperature gradient, GL. Thus, combinations of δC(g), V(g) and GL(g) were calculated as a function of solidified melt fraction, g, by using a nonlinear programming technique 'polytope method', which leads to the true dynamic congruent-state growth from a finite amount of melt, i.e. a growth with an almost constant composition throughout the crystal and very little amount of uncoupled ionic species contained in the crystal. The micro-pulling-down technique is the most suitable growth method which can meet the calculated growth conditions.

Original languageEnglish
Pages (from-to)229-239
Number of pages11
JournalJournal of Crystal Growth
Volume155
Issue number3-4
DOIs
Publication statusPublished - 1995 Oct 2
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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