Growth of noncongruent LiTaO3 crystal by chemical vapor phase equilibration using niobium‐based two‐phase powder

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

1 Scopus Citations
View graph of relations

Author(s)

  • Xiao-Fei Yang
  • Zi-Bo Zhang
  • Wing-Han Wong
  • De-Long Zhang

Detail(s)

Original languageEnglish
Pages (from-to)4911–4915
Journal / PublicationJournal of the American Ceramic Society
Volume101
Issue number11
Online published6 Jul 2018
Publication statusPublished - Nov 2018

Abstract

Noncongruent nearly stoichiometric/lithium-deficient LiTaO3 crystal was grown by lithium-rich/lithium-deficient chemical vapor-phase-equilibration (VPE) technique, and low-cost two-phase powder LiNbO3-Li3NbO4 or LiNbO3-LiNb3O8 instead of expensive LiTaO3-Li3TaO4 or LiTaO3-LiTa3O8 was used in the VPE experiments. The LiTaO3 crystalline phase in the lithium-rich/lithium-deficient crystal was confirmed by X-ray analysis. The lithium-rich/lithium-deficient VPE-induced lithium-oxide (Li2O) molar content increase/reduction was measured as a function of VPE duration using gravimetric method, and empirical relations between them are presented for both cases. We show that both the lithium-rich and lithium-deficient VPE techniques based on the two-phase powder LiNbO3-Li3NbO4 or LiNbO3-LiNb3O8 can be successfully used to adjust the lithium-oxide content in a LiTaO3 crystal and produce a noncongruent nearly stoichiometric or lithium-deficient crystal plate with desired lithium-oxide content.

Research Area(s)

  • Crystal growth, Lithium niobate, Optical materials/properties, Phase equilibria

Citation Format(s)

Growth of noncongruent LiTaO3 crystal by chemical vapor phase equilibration using niobium‐based two‐phase powder. / Zhang, Chao-Yang; Yang, Xiao-Fei; Zhang, Zi-Bo; Wong, Wing-Han; Pun, Edwin Yue-Bun; Zhang, De-Long.

In: Journal of the American Ceramic Society, Vol. 101, No. 11, 11.2018, p. 4911–4915.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review