Rapid growth of DKDP crystals from high-acidity solutions

Raman spectral characterization of NH 4 H 2 PO 4 single crystals: Effect of pH on microstructure

“…pH is an important crystal growth parameter, affecting the stability of solution and crystal defects. Several studies have been conducted on KDP crystals [5][6][7][8]. Sharma et al [9] investigated the effect of pH on the growth kinetics of the pyramidal and prismatic faces of KDP; maximum growth was observed at a stoichiometric pH of 4.2.…”

Characterization of KDP crystal grown from solution with low pH value

“…KDP crystal grown from solution with low pH value displays more defects in pyramid sector. Because the increase viscosity (and density) of low pH growth solution results in weaker diffusion processes close to the growing surface (at the same stirring of solutions), which impairs the substance supply to the growing faces [8]. What's more, the tangential rotations speed of (100) crystal face is faster than that of (101) face due to the crystallography shape of KDP crystal as it reaches certain size.…”

“…As an important growth parameter, the influence of pH value on KDP crystal growth has triggered constant keen interest [5,6]. Rashkovich [7] and Bredikhin [8] found the growth rate of (100) face got maximum value of KDP crystal and σ* increased with the decrease of solution pH value. While Sharma [9] hold that the growth rate of (100) face got fastest at pH=4.2, and reduced with the decrease of solution pH value under whatever supersaturation.…”

Light Scattering in KDP Crystals and Relaxation Oscillations of Diffusion Layer in Crystal Growth from Solutions

“…This crystal growth scheme is simplest for studies, as it allows varying parameters, such as flow intensity, distance between the feeder and the growing surface, solution temperature, and others almost independently. A setup of high-rate profiled growth with the crosssection of a growth chamber (and of a grown crystal) of 43 43 mm 2 was used in the study [7,10,11]. The experiments were carried out for growing KDP crystals by the (101) face.…”