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Title: Morphological aspects of flux grown 0.91PZN-0.09PT crystals
Authors: Kumar, F.J.
Lim, L.C. 
Chilong, C.
Tan, M.J.
Issue Date: 15-Jun-2000
Citation: Kumar, F.J., Lim, L.C., Chilong, C., Tan, M.J. (2000-06-15). Morphological aspects of flux grown 0.91PZN-0.09PT crystals. Journal of Crystal Growth 216 (1) : 311-316. ScholarBank@NUS Repository.
Abstract: The nucleation and growth of 0.91PZN-0.09PT single crystals was investigated by the slow-cooling flux technique using PbO flux and by means of hot-stage microscopy. The results showed that during the initial stages of cooling small crystals of cubic morphology nucleated first. On further cooling, preferential growth developed along the four 〈1 1 1〉 corners of the cubic crystals, and one of the corners eventually outgrew the rest into a large arrowhead-shaped crystal against the heat flow direction. The terrace nature of the arrowhead crystals suggests that kinetic roughening, possibly promoted by a critical supersaturation in the solution, is the mechanism of the fast growth of PZN-PT crystals. The present work shows that under favorable conditions, such as with a high inverse temperature gradient and a solution cooling rate of about 1 °C/h, large-sized PZN-PT crystals measuring 3.0×2.5×2.0 cm3 can be reproducibly grown from PbO flux by the slow-cooling technique.
Source Title: Journal of Crystal Growth
ISSN: 00220248
DOI: 10.1016/S0022-0248(00)00446-2
Appears in Collections:Staff Publications

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