As a crystal grows, the temperature distribution of and melt will change. It is necessary to study dynamic process single-crystal growth. Due relatively low crystallization rates used in industrial Czochralski growth system, steady state compute flow. A two-dimensional axisymmetric model whole furnace was established. The large-size bulk β-Ga2O3 single using method has been numerically analyzed...

The influence of various convective levels in a melt on a S/L interface is experimentally investigated in a continuous way from pure laminar flows to turbulent ones. Simple description in the Fourier space makes apparent a chaotic and oscillating zones alternance when thermal field is progressively increased. A classical theoretical transition towards the chaos (Feigenbaum mechanism) seems to b...

Abstract We present a phase-field crystal model for solidification that accounts thermal transport and temperature-dependent lattice parameter. Elasticity effects are characterized through the continuous elastic field computed from microscopic density field. showcase capabilities via selected numerical investigations which focus on prototypical growth of two-dimensional crystals melt, resulting...

The fractional latent heat of a crystallizing system is simply the latent heat of fusion divided by the total enthalpy. When plotted against temperature, this function displays robust pulses with the successive saturation of each incoming crystal phase. Each pulse endures for tens of degrees, corresponding to tens to hundreds of thousands of years in large magma bodies. From an original 1963 de...

Layered superconductors are attractive because some of them show high critical temperatures. While their crystal structures are similar, these compounds are composed of many elements. Compounds with many elements tend to be incongruent melting compounds, thus, their single crystals cannot be grown via the melt-solidification process. Hence, these single crystals have to be grown below the decom...

By observing the crystal shapes and kinetics of ice Ih growing at high pressures from the melt, it was found that the prism f1 0 1̄ 0g faces undergo a roughening transition at approximately 16 C and 160MPa (1600 bar) in H2O ice, and 14 C and 180MPa (1800 bar) in D2O ice. At temperatures above the roughening transition, the prism facets completely vanished and the curves of growth rate versus gro...

Two phenomena will be considered. Phase transformations (PTs) and chemical reactions (CRs) under compression and shear of materials in rotational diamond anvil cell (RDAC) represent examples of apparent effects of plastic shear. We recently predicted the new phenomenon that crystal-crystal and crystalamorphous PTs can occur through virtual melting (VM) significantly below (> 1000K!) the melting...

We monitored the crystal growth kinetics of crystallization of a shear melted crystalline colloidal array (CCA). The fcc CCA heterogeneously nucleates at the flow cell wall surface. We examined the evolution of the (1 1 1) Bragg diffraction peak, and, for the first time, quantitatively monitored growth by measuring the temporal evolution of the Bragg diffraction interference fringes. Modeling o...