The influence of an interface electric field on the distribution coefficient of chromium in LiNbO3

Satoshi Uda, William A. Tiller

研究成果: Article査読

51 被引用数 (Scopus)

抄録

The effective solute partitioning of chromium was investigated on single crystals of LiNbO3 grown by the laser-heated pedestal growth (LHPG) technique. Electric field effects at the interface influence this solute partitioning, leading to an electric field-dependent effective solute distribution coefficient, kE. The LHPG technique made it possible to explore these field effects by controllably changing the growth velocity (V) and the temperature gradient (GS, GL) near the interface over a wide range. The electric field generated via the temperature gradient is associated with the thermoelectric power while an additional electric field is growth rate associated via a charge separation effect. By applying the Burton-Prim-Slichter (BPS) theory to our experimental data, we found the phase diagram solute partition coefficient to be k0 ≈ 3.65, while the field-influenced solute partition coefficient (V = 0) was k′EO ≈ 8.17 at GL ≈ 11500°C/cm. It is theoretically shown that the same considerations can be applied to all ionic partitioning at a solid-liquid interface.

本文言語English
ページ(範囲)93-110
ページ数18
ジャーナルJournal of Crystal Growth
121
1-2
DOI
出版ステータスPublished - 1992 6月
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 無機化学
  • 材料化学

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