Influence of factors on growth of off-congruent LiNbO3 single-crystal by li-rich/li-poor chemical vapor transport equilibration
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Original language | English |
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Pages (from-to) | 1793-1798 |
Journal / Publication | Crystal Growth and Design |
Volume | 13 |
Issue number | 4 |
Publication status | Published - 3 Apr 2013 |
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Abstract
Influence of factors on growth of off-congruent LiNbO3 single-crystal by Li-rich/Li-poor chemical vapor transport equilibration (VTE) was studied. These factors include the molar ratio of raw materials Li 2CO3 and Nb2O5 for preparing two-phase crucible, the hollow space volume for VTE growth, and the period of use of two-phase crucible. To achieve the goal, a number of off-congruent LiNbO3 plates were grown by Li-rich/Li-poor VTE technique using four two-phase crucibles having different molar ratios of raw materials, hollow space volumes, and periods of use. The VTE-induced crystal composition alteration was characterized by measurement of birefringence. A comparison of results of different crucibles shows that in the Li-rich VTE case the first factor has less effect, while the latter two may cause a difference of Li2O content as much as 0.4 mol %. Larger hollow space volume and older crucible tend to degrade the VTE growth efficiency. Instead, the growth by Li-poor VTE is less affected by the three factors because of much lower Li2O gas pressure and hence slow growth rate in comparison with that by Li-rich VTE. © 2013 American Chemical Society.
Citation Format(s)
Influence of factors on growth of off-congruent LiNbO3 single-crystal by li-rich/li-poor chemical vapor transport equilibration. / Zhang, De-Long; Chen, Bei; Yu, Dao-Yin et al.
In: Crystal Growth and Design, Vol. 13, No. 4, 03.04.2013, p. 1793-1798.
In: Crystal Growth and Design, Vol. 13, No. 4, 03.04.2013, p. 1793-1798.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review