The microsegregation behaviour of antimony in the faceted and non-faceted Czochralski silicon crystal growth was analyzed quantitatively. Using small melt heights and no rotation, dopant striations of various small spacings were eliminated. Interface demarcation and spreading resistance measurements were used for the segregation analysis. The dopant concentration and its fluctuation during the ...

Rhyolitic obsidians from Krafla volcano, Iceland, record the interaction between mobile hydrous species liberated during crystal growth and the reduction of ferric iron in the silicate melt. We performed synchrotron μ-FTIR and μ-XANES measurements along a transect extending from a spherulite into optically distinct colorless and brown glass zones. Measurements show that the colorless glass is e...

High-pressure Bridgman (HPVB) and vertical zone melting (HPVZM) growth processes have been applied for the manufacturing of Cd1-xZnxTe (x = 0.04 – 0.2), CdSe and ZnSe crystal tapes with sizes up to 120×120×12 mm. The influences of the technological parameters describing the growth processes on the crystal quality and some selected material properties are discussed. The dependence of the inclusi...

The detailed comparative analysis of luminescent and scintillation properties of the single crystalline films (SCF) of YAG:Ce garnet grown from melt-solutions based on the traditional PbO-based and novel BaO-based fluxes, and of a YAG:Ce bulk single crystal grown from the melt by the Czochralski method, was performed in this work. Using the Am (a-particle, 5.49 MeV) excitation we show that scin...

A stable growth mode of a single dendritic crystal solidifying in an undercooled ternary (multicomponent) melt is studied with allowance for forced convective flow. The steady-state temperature, solute concentrations and fluid velocity components are found two- three-dimensional problems. stability criterion the total undercooling balance derived accounting surface tension anisotropy at solid-m...

The crystal growth kinetics and interfacial properties of titanium (Ti) are studied using molecular dynamics computer simulation. interactions between the Ti atoms modeled via an embedded atom method potential. First, free solidification (FSM) is used to determine melting temperature Tm at zero pressure where transition from liquid body-centered cubic occurs. From simulations with FSM, kinetic ...

a semi-batch crystallization system is used to determine growth kinetics and morphology of barium carbonate crystals, under a constant ph value and constant temperature in the various relative supersaturations. results show that crystal growth rate satisfies a first-order kinetic expression at high relative supersaturation, while at relative supersaturation values lower than 3,  the kinetic exp...