Search Results - "Virbulis, J."

3D modeling of doping from the atmosphere in floating zone silicon crystal growth by Sabanskis, A., Surovovs, K., Virbulis, J.

“…Three-dimensional numerical simulations of the inert gas flow, melt flow and dopant transport in both phases are carried out for silicon single crystal growth…”
Get full text

3D modeling of growth ridge and edge facet formation in 〈100〉 floating zone silicon crystal growth process by Krauze, A., Virbulis, J., Zitzelsberger, S., Ratnieks, G.

“…•Ridge growth on 4″ and 5″ Si crystals was modeled.•Characteristic ridge formation due to {111} facet development was observed.•Azimuthal widths of the…”
Get full text

Simulation of the influence of gas flow on melt convection and phase boundaries in FZ silicon single crystal growth by Sabanskis, A., Virbulis, J.

“…Axisymmetric calculations of inert gas flow in a floating zone puller are carried out using an open source software package OpenFOAM. Transient axisymmetric…”
Get full text

Application of enthalpy model for floating zone silicon crystal growth by Krauze, A., Bergfelds, K., Virbulis, J.

“…A 2D simplified crystal growth model based on the enthalpy method and coupled with a low-frequency harmonic electromagnetic model is developed to simulate the…”
Get full text

Mathematical modelling of the feed rod shape in floating zone silicon crystal growth by Plāte, M., Krauze, A., Virbulis, J.

“…A three-dimensional (3D) transient multi-physical model of the feed rod melting in the floating zone (FZ) silicon single-crystal growth process is presented…”
Get full text

Advances in the simulation of heat transfer and prediction of the melt-crystal interface shape in silicon CZ growth by Lukanin, D.P., Kalaev, V.V., Makarov, Yu.N., Wetzel, T., Virbulis, J., von Ammon, W.

“…We present an updated version of the combined 2D/3D model of heat transfer and turbulent melt convection for industrial Czochralski (CZ) crystal growth. The 3D…”
Get full text

The impact of nitrogen on the defect aggregation in silicon by von Ammon, W., Hölzl, R., Virbulis, J., Dornberger, E., Schmolke, R., Gräf, D.

“…A nitrogen-doped floating zone (FZ) crystal with a linear increase of the axial nitrogen content from zero to more than 1×10 15 at/cm 3 was grown. It was found…”
Get full text

Calculation of bulk defects in CZ Si growth: impact of melt turbulent fluctuations by Kalaev, V.V., Lukanin, D.P., Zabelin, V.A., Makarov, Yu.N., Virbulis, J., Dornberger, E., Ammon, W.von

“…We present 3D unsteady analysis of melt turbulent convection coupled with heat transfer in the crystal and crucible during 300 mm CZ Si crystal growth. The 3D…”
Get full text

Numerical investigation of silicon melt flow in large diameter CZ-crystal growth under the influence of steady and dynamic magnetic fields by Virbulis, J, Wetzel, Th, Muiznieks, A, Hanna, B, Dornberger, E, Tomzig, E, Mühlbauer, A, Ammon, W.v

“…Turbulent silicon melt flows are studied in large diameter Czochralski crucibles under the influence of alternating, steady and combined magnetic fields. The…”
Get full text

Modeling of transient point defect dynamics in Czochralski silicon crystals by Dornberger, E., von Ammon, W., Virbulis, J., Hanna, B., Sinno, T.

“…Intrinsic point defects control the formation of grown-in defects in silicon crystals. Under steady state conditions, the type of the prevailing point defect…”
Get full text

Crystal growth melt flow control by means of magnetic fields by Galindo, V., Gerbeth, G., von Ammon, W., Tomzig, E., Virbulis, J.

“…Contactless melt flow control is important in many crystal growth technologies. Typically, steady magnetic fields are used to damp convective flow. On the…”
Get full text

Modeling analysis of unsteady three-dimensional turbulent melt flow during Czochralski growth of Si crystals by Evstratov, I.Yu, Kalaev, V.V., Zhmakin, A.I., Makarov, Yu.N., Abramov, A.G., Ivanov, N.G., Smirnov, E.M., Dornberger, E., Virbulis, J., Tomzig, E., von Ammon, W.

“…We describe a computational model based on Large Eddy Simulation to calculate 3D unsteady turbulent melt convection in Czochralski systems for Si-crystal…”
Get full text

Physical modelling of the melt flow during large-diameter silicon single crystal growth by Gorbunov, L., Pedchenko, A., Feodorov, A., Tomzig, E., Virbulis, J., Ammon, W.V.

“…The reported investigations concern physical modelling of Czochralski growth of silicon large-diameter single crystals. InGaSn eutectic was used as a modelling…”
Get full text

Numerical 2D modelling of turbulent melt flow in CZ system with dynamic magnetic fields by Krauze, A., Muiznieks, A., Mühlbauer, A., Wetzel, Th, Gorbunov, L., Pedchenko, A., Virbulis, J.

“…The paper presents results of 2D axisymmetric mathematical modelling of laboratory CZ model facility that corresponds well to a large industrial silicon CZ…”
Get full text

Prediction of the growth interface shape in industrial 300 mm CZ Si crystal growth by Wetzel, Th, Virbulis, J., Muiznieks, A., von Ammon, W., Tomzig, E., Raming, G., Weber, M.

“…A model approach for a modification of the effective heat conductivity in the turbulent melt flow simulation for 28″ Si CZ crucibles is presented, which helped…”
Get full text

Analysis of magnetic field effect on 3D melt flow in CZ Si growth by Ivanov, N.G., Korsakov, A.B., Smirnov, E.M., Khodosevitch, K.V., Kalaev, V.V., Makarov, Yu.N., Dornberger, E., Virbulis, J., von Ammon, W.

“…Three-dimensional turbulent melt convection in an industrial Czochralski Si-crystal growth system subjected to action of an axial stationary magnetic field is…”
Get full text

Numerical 3D modelling of turbulent melt flow in a large CZ system with horizontal DC magnetic field. II. Comparison with measurements by Krauze, A., Muižnieks, A., Mühlbauer, A., Wetzel, Th, Tomzig, E., Gorbunov, L., Pedchenko, A., Virbulis, J.

“…This paper presents a comparison between numerically calculated and measured temperature distributions in turbulent flow in a laboratory model for a CZ large…”
Get full text

Numerical model of turbulent CZ melt flow in the presence of AC and CUSP magnetic fields and its verification in a laboratory facility by Wetzel, Th, Muiznieks, A., Mühlbauer, A., Gelfgat, Y., Gorbunov, L., Virbulis, J., Tomzig, E., Ammon, W.v.

“…The paper describes a numerical simulation tool for heat and mass transfer processes in large diameter CZ crucibles under the influence of several non-rotating…”
Get full text

Analysis of the dopant segregation effects at the floating zone growth of large silicon crystals by Mühlbauer, A., Muiznieks, A., Virbulis, J.

“…A computer simulation is carried out to study the dopant concentration fields in the molten zone and in the growing crystal for the floating zone (FZ) growth…”
Get full text

Stress-induced dislocation generation in large FZ- and CZ-silicon single crystals—numerical model and qualitative considerations by Muižnieks, A., Raming, G., Mühlbauer, A., Virbulis, J., Hanna, B., Ammon, W.v.

“…When growing silicon crystals with higher diameter (presently up to 300 mm) the thermal stresses and possible dislocation generation in single crystals become…”
Get full text