Growth of KDP-Group Crystals from Solution

Chernov, A. A.; Rashkovich, L. N.; Smol'skii, I. L.; Kuznetsov, Yurii G.; Mkrtchyan, A. A.; Малкин, А. И.

doi:10.1007/978-1-4615-7125-4_4

Cited by 39 publications

(70 citation statements)

References 36 publications

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“…3, there are two processes that must occur for the growth of any crystal (Chernov, 1984;Chernov et al, 1988), which we refer to as crystal face growth and tangential growth. Growth normal to the surface proceeds by the initiation of new layers, or islands in most cases, which exhibit step edges to which new molecules can be added.…”

Section: Mechanisms Of Crystal Growthmentioning

confidence: 99%

“…Virtually all kinetic and thermodynamic variables are dependent upon supersaturation (Chernov, 1984;Chernov et al, 1988). This includes the probability of forming critical nuclei, that is, the birth of a new crystal; initiation of new layers on an existing surface; the velocity of step movement on the surface (tangential growth); the incorporation of impurities (Chernov, 1984;Chernov et al, 1988;Rosenberger et al, 1996) and a host of other processes. Even the particular kind of mechanism that is employed in growth on a crystal surface is dependent on supersaturation.…”

Section: Mechanisms Of Crystal Growthmentioning

confidence: 99%

“…4. AFM allows the investigator to observe the changes in the islands as a function of time, thereby permitting the calculation of step movement rates which, at specified supersaturations, provide important thermodynamic parameters (Chernov, 1984;Chernov et al, 1988;Kuznetsov et al, 1995Plomp et al, 2001).…”

Section: Mechanisms Of Crystal Growthmentioning

confidence: 99%

“…11. Step edges, whatever their source, are usually extremely rough and irregular, though ideally, they should be smooth. The roughness is a consequence of impurity molecules incorporating into the step edges and locally ''pining'' step edge progression, thereby resulting in gaps and teeth in advancing layers (Chernov, 1984;Chernov et al, 1988). The ubiquity of irregular step edges attests to the very high level of impurities present in macromolecular crystals compared with most conventional crystallizing systems.…”

Section: Mechanisms Of Crystal Growthmentioning

confidence: 99%

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Macromolecular crystal growth as revealed by atomic force microscopy

McPherson

Kuznetsov

Malkin

et al. 2003

Journal of Structural Biology

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Direct visualization of macromolecular crystal growth using atomic force microscopy (AFM) has provided a powerful tool in the delineation of mechanisms and the kinetics of the growth process. It has further allowed us to evaluate the wide variety of impurities that are incorporated into crystals of proteins, nucleic acids, and viruses. We can, using AFM, image the defects and imperfections that afflict these crystals, the impurity layers that poison their surfaces, and the consequences of various factors on morphological development. All of these can be recorded under normal growth conditions, in native mother liquors, over time intervals ranging from minutes to days, and at the molecular level.

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Section: Mechanisms Of Crystal Growthmentioning

confidence: 99%

Section: Mechanisms Of Crystal Growthmentioning

confidence: 99%

Section: Mechanisms Of Crystal Growthmentioning

confidence: 99%

Section: Mechanisms Of Crystal Growthmentioning

confidence: 99%

See 2 more Smart Citations

Macromolecular crystal growth as revealed by atomic force microscopy

McPherson

Kuznetsov

Malkin

et al. 2003

Journal of Structural Biology

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“…The flow direction of nutrient solution, its rate and supersaturation determine equilibrium surface morphology, growth rates, dominant mechanisms etc. [1,2]. We show the results direct observations by using atomic-force microscope (AFM) of a topographical changes on the sodium chloride and potassium dihydrogen phosphate crystal surfaces, which grow in the directed nutrient flow.…”

Section: Introductionmentioning

confidence: 78%

Crystal growth in the directed solution flow byin situAFM-observations

Пискунова¹

2002

Acta Cryst Sect A

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Mixed crystal formation is characterized by specific phenomena and mechanisms what is urgent to reconstruct a mineral origin and to grow such crystals. The following processes including their joint development are observed in supercooled mixed solutions: dissolution, replacement, metastable heterogeneous equilibrium, and direct growth. A thermostatic vessel was used for visual observations and quantitative measurements of the processes in the ternary aqueous system with Co-Ni Tutton salts. Volume-deficit and volumeexcess replacement reactions were investigated during the interactions of the various mixed solutions and the end-member crystals of the isomorphic series. The phenomena mechanisms are interpreted in terms of the concept of multimineral-metasomatic crystallogenesis with help of modified Schreinemakers phase diagrams. Such combined morphological-kinetic investigations of mixed crystal formation are carried out for the fist time. In a general case of mixed crystal formation the ratios of the replacement and growth varies in a wide range depended on the crystal/solution compositions and the supercooling. A replacement is changed by a growth the faster the supercooling is higher. The characteristic supercooling of the growth without a replacement stage (the position of the metastable equilibrium) the versus the solution composition reaches a maximum around the equal quantity of the isomorphic components in the solution. In the case of a pure isomorphic replacement in a solution saturated by another isomorphic component, the rate of the process is slowed down during the course for all the solution compositions. These processes cause formation of unordinary spongy-like and epitaxy-excrescenced pseudomophs at volume-deficit and volume-excess replacement reactions respectively. Keywords: CRYSTALLOGENESIS, ISOMORPHISM, MINERALOGY Acta Cryst. (2002). A58 (Supplement), C168GROWTH AND POLING OF BATIO3 SINGLE CRYSTALS T.K. Lee H.J. Park S.J. Chung Seoul National University School of Materials Science and Engineering Gwanak-Gu Shinlim-Dong San 56-1 SEOUL 151-742 SOUTH KOREA BaTiO3 single crystals were grown by the top-seeded solution growth technique. The solution was composed of 33.5 mol% BaO and 66.5 mol% TiO2. The observed surface roughening temperature was in the temperature range of [1370][1371][1372][1373][1374][1375][1376][1377][1378][1379][1380] o C in this solution. The grown crystals were yellowish, transparent and about 2-3 cm in size. The spatial domain configurations in the grown crystals were observed under a polarizing microscope, transmission electron microscope and by X-ray topography.In the poling process of the grown crystals, pressing, heating and applying of electric field were taken simultaneously according to a poling schedule on a house-made poling apparatus. The elimination of 90° domain boundaries could be confirmed under a polarizing microscope.The refractive indices of as-grown crystals and the poled crystals are compared each other to examine the quality of the grown crystals. The dielec...

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