Guogang Xu

Investigation of single crystal growth of GaPO4 by the flux method

GaPO4 crystals have been grown by a spontaneous nucleation method and the top-seeded solution growth method using three different solvents, 3MoO3-Li2O, 3MoO3-K2O and 2KPO3-5MoO3-3LiF. All of the as-grown crystals were characterized by means of X-ray powder diffraction. The results show that all the crystals were well crystallized and belong to the point group 32, and 2KPO3-5MoO3-3LiF flux is the best for nucleation and growth of transparent GaPO4 crystals. The infrared spectrum of GaPO4 single crystal obtained by the flux method shows that there is no incorporation of OH groups during the crystallization, which is beneficial for high temperature piezoelectric applications.

Growth of BPO4 single crystals from Li2Mo3O10 flux

Transparent single crystal of BPO{sub 4} with a typical sizes of 5 x 7 x 9 mm{sup 3} have been grown by the top-seeded solution growth (TSSG) slow-cooling method using Li{sub 2}Mo{sub 3}O{sub 10} as the flux. X-ray powder diffraction result shows that the as-grown crystal was well crystallized and indexed in a tetragonal system. The processing parameters and the effects of the flux on the crystal growth were investigated.Transparent single crystal of BPO4 with a typical sizes of 5 × 7 × 9 mm3 have been grown by the top-seeded solution growth (TSSG) slow-cooling method using Li2Mo3O10 as the flux. X-ray powder diffraction result shows that the as-grown crystal was well crystallized and indexed in a tetragonal system. The processing parameters and the effects of the flux on the crystal growth were investigated.