Crystallization kinetics driven by two simultaneous modes of crystal growth
In this work, we analyse the growth of nuclei precipitating from a supersaturated liquid. Two simultaneous habits of crystal growth are considered: interface-controlled three-dimensional growth with a growth rate u up to a threshold radio Rc and then diffusion-controlled growth when steady growth is...
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Taylor and Francis Inc.
2000
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| LEADER | 07135caa a22007457a 4500 | ||
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| 024 | 7 | |2 scopus |a 2-s2.0-0034309413 | |
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| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Fontana, M. | |
| 245 | 1 | 0 | |a Crystallization kinetics driven by two simultaneous modes of crystal growth |
| 260 | |b Taylor and Francis Inc. |c 2000 | ||
| 270 | 1 | 0 | |m Fontana, M.; Laboratorio de Solidos Amorfos, Departamento de Fisica, Universidad de Buenos Aires, Paseo Colon, 850-(1063) Buenos Aires, Argentina; email: mfontan@fi.uba.ar |
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| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a In this work, we analyse the growth of nuclei precipitating from a supersaturated liquid. Two simultaneous habits of crystal growth are considered: interface-controlled three-dimensional growth with a growth rate u up to a threshold radio Rc and then diffusion-controlled growth when steady growth is achieved at the initial stages owing to the large supersaturation in between the nucleus and the liquid neighbourhood. The threshold radio Rc determines the growth habit of each grain. For isothermal processes, we discover that the temporal dependence of the crystalline fraction follows scaling laws. Two parameters summarize the master curves: firstly, a dimensionless magnitude named P, where P = (π/3)IDeff4/u5, where Deff is the effective diffusion coefficient and I the nucleation frequency; secondly, the time tc needed by the first created embryo to reach the threshold radio Rc. At tc the growth switches from one mechanism to the other. These two quantities are also scaling factors for the temporal evolution of the density of grains and the mean grain size. We discuss the applicability of the model to real systems. |l eng | |
| 536 | |a Detalles de la financiación: Universidad de Buenos Aires, UBACYT IN002 | ||
| 536 | |a Detalles de la financiación: MAT96-0769, MAT96-0692 | ||
| 536 | |a Detalles de la financiación: Comissió Interdepartamental de Recerca i Innovació Tecnològica, ACI-96 | ||
| 536 | |a Detalles de la financiación: ACKNOWLEDGEMENTS Financial support from the Comissio Interdepartamental de Recerca i Tecnologia’ in project ACI-96, from the Universidad de Buenos Aires in project UBACYT IN002 and from Comision Interministerial de Genicia y Tecnologia in projects MAT96-0692 and MAT96-0769 is acknowledged. | ||
| 593 | |a Laboratorio de Sólidos Amorfos, Departamento de Física, Universidad de Buenos Aires, Paseo Colon, 850-(1063) Buenos Aires, Argentina | ||
| 593 | |a Grup de Física Dels Materials I, Departament de Física, Universidad Autònoma de Barcelona, 08193-Bellaterra, Spain | ||
| 593 | |a Grup de Física de l'Estad Sòlid, Departament d'Estructura I Constituents de la Matèria, Universitat de Barcelona, Diagonal 647, 08028-Barcelona, Spain | ||
| 700 | 1 | |a Arcondo, Bibiana Graciela | |
| 700 | 1 | |a Clavaguera-Mora, María Teresa | |
| 700 | 1 | |a Clavaguera, N. | |
| 773 | 0 | |d Taylor and Francis Inc., 2000 |g v. 80 |h pp. 1833-1856 |k n. 10 |p Philos Mag B |x 13642812 |t Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties | |
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