AFM investigation of step kinetics and hillock morphology of the {100} face of KDP

Thomas, T.; Land, T. A.; Martin, Tracie; Casey, William H.; DeYoreo, J. J.

doi:10.1016/j.jcrysgro.2003.08.054

Cited by 48 publications

(61 citation statements)

References 26 publications

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“…3b). These data are very similar to those known from the literature for solution growth [14]. It suggests that surface kinetics in case of the (101) face is similar to that in solution.…”

Section: Resultssupporting

confidence: 88%

In situ interferometric investigation of hillock morphology of the {100} and {101} faces of KDP growing in TMS gels

Krasiński

2005

Cryst. Res. Technol.

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The results of an in situ interferometric study of the surface morphology of {100} and {101} faces of potassium dihydrogen phosphate (KDP) crystals growing in the tetramethoxysilane gel are described and discussed. It was observed that: (a) in the case of crystal growth in gel both slopes of hillocks and surface kinetic coefficient are smaller than in solution growth, (b) for low supersaturations face growth rate linearly depends on bulk supersaturation and the structure of growth centers depends on the supersaturation and growth rate, and (c) for high supersaturations polyhedral instability appears. Supersaturation threshold for transition to polyhedral instability was estimated and formation of gel inclusions is discussed.

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“…3b). These data are very similar to those known from the literature for solution growth [14]. It suggests that surface kinetics in case of the (101) face is similar to that in solution.…”

Section: Resultssupporting

confidence: 88%

In situ interferometric investigation of hillock morphology of the {100} and {101} faces of KDP growing in TMS gels

Krasiński

2005

Cryst. Res. Technol.

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“…This is similar to the approach proposed by DeYoreo and co-workers (Thomas et al 2004). The critical length of edge i is then determined by asking whether adding a new row of molecules to this edge at its current instantaneous length either increases or decreases the free energy of the system (figure 5).…”

Section: (B ) Spiral Edge Heightmentioning

confidence: 97%

Predicting crystal growth by spiral motion

2009

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We present a systematic modelling methodology using the spiral growth mechanism of Burton, Cabrera and Frank to predict the steady-state shape of organic molecular crystals grown from solution. This methodology has been developed to eliminate the need for special modifications for each new crystal system studied. Therefore, the mechanisms and choices for spiral shapes, edges and evolution are mathematically determined as governed by the underlying solid-state chemistry and physics. The power of the approach is demonstrated for several crystal systems: naphthalene grown from both ethanol and cyclohexane; anthracene grown from 2-propanol; and glycine grown from water. The predicted crystal shapes are in good agreement with experiment.

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“…For comparison, the relationship at the saturation temperature of 35 • C are also displayed in Figure 5 [16]. The elementary number was calculated as the step height divided by the elementary step height, which was 0.37 nm, or half unit cell height [17].…”

Section: The Step Structure On (100) Facesmentioning

confidence: 99%

“…T.N. Thomas [17] found that growth on the (100) face occurred almost exclusively at macrosteps, which increased in height and terrace width with distance from the top of the hillock when σ > 0.035.…”

Section: Effect Of Temperature On Step Bunchingmentioning

confidence: 99%

Study on Micro Morphology of Potassium Dihydrogen Phosphate Crystals Grown at Elevated Temperatures

Wang

Ding

et al. 2017

Crystals

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Potassium dihydrogen phosphate crystals were grown around 65 • C. The growth rate of KDP (KH 2 PO 4 ) crystal prismatic faces was measured by laser polarization interference system. The surface micro morphology of KDP crystals grown at various supersaturation were comparatively observed by atomic force microscope systematically. The results show that the growth rate increased with the rise of supersaturation, the aspect ratio reduced. The steps bunching height occurred at σ = 0.03 and 0.04. At this point, the steps height reached maximum value about 11.3~24.4 nm. The step bunching was almost constant at higher supersaturation. A few pits and holes appeared on the crystal surface at high supersaturation. In our opinion, the forming of these pits and holes might be related with the step movement and 2D nuclei mechanism.

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AFM investigation of step kinetics and hillock morphology of the {100} face of KDP

Cited by 48 publications

References 26 publications

In situ interferometric investigation of hillock morphology of the {100} and {101} faces of KDP growing in TMS gels

In situ interferometric investigation of hillock morphology of the {100} and {101} faces of KDP growing in TMS gels

Predicting crystal growth by spiral motion

Study on Micro Morphology of Potassium Dihydrogen Phosphate Crystals Grown at Elevated Temperatures

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