A numerical simulation study for the effect of applied magnetic field in growth of CdTe single crystals by the traveling heater method

2003 ◽  
Vol 17 (4) ◽  
pp. 271-288 ◽  
Author(s):  
S. Dost ◽  
Y. Liu ◽  
B. Lent ◽  
R.F. Redden
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Single Crystals ◽  
Simulation Study ◽  
Applied Magnetic Field ◽  
Traveling Heater Method

A Numerical Simulation Study on the Effects of Crucible Rotation and Magnetic Fields in Growth of SiGe by the Traveling Heater Method

2011 ◽  
Vol 134 (1) ◽  
Author(s):  
Youhei Takagi ◽  
Yasunori Okano ◽  
Sadik Dost
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Static Magnetic Field ◽  
Simulation Study ◽  
Concentration Field ◽  
Magnetic Field Direction ◽  
Simultaneous Application ◽  
Rotation Rates ◽  
Traveling Heater Method ◽  
Crucible Rotation

A numerical simulation study was carried out to shed light on the effects of applied crucible rotation and static magnetic field during the traveling heater method growth of bulk SiGe single crystals. The simulation results show that the application of crucible rotation weakens the radial silicon concentration gradient due to the effect of centrifugal force. The effects of applied static magnetic field direction and strength on the concentration field in the melt were also studied. It was found that the simultaneous application of crucible rotation and static magnetic field is best to grow large crystals with uniform composition. An optimum combination of crucible rotation rates and applied magnetic field strengths is determined.

Numerical simulation of vacuum surface flashover under applied magnetic field

2010 ◽  
Vol 22 (10) ◽  
pp. 2501-2504 ◽  
Author(s):  
刘瑜 Liu Yu ◽  
邓建军 Deng Jianjun ◽  
王勐 Wang Meng ◽  
邹文康 Zou Wenkang ◽  
周良骥 Zhou Liangji
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Applied Magnetic Field ◽  
Surface Flashover

Numerical Simulation Study for the Effect of the Strength and the Direction of a Static Magnetic Field on the Transient Double-Diffusive Flow in Liquid Phase during an Alloy Solidification

2010 ◽  
Vol 297-301 ◽  
pp. 97-104 ◽  
Author(s):  
Farid Mechighel ◽  
Bernard Pateyron ◽  
Mahfoud Kadja ◽  
Mohammed El Ganaoui ◽  
S. Dost
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Static Magnetic Field ◽  
Simulation Study ◽  
Solidification Process ◽  
Magnetic Field Effects ◽  
Charge Balance ◽  
Diffusive Flow ◽  
Volume Method ◽  
Double Diffusive

A numerical simulation study has been carried out to examine the effect of a static magnetic field on the solidification process of an alloy. A mathematical model, based on the continuum model, was developed for the computation of a transient double-diffusive fluid flow under Lorentz body force. The model includes conservation of mass and momentum, heat, species and electrical charge balance equations. The simulation domain was selected as a cavity filled with a metallic alloy and differentially heated, which may be taken as a Bridgman model domain used in the crystal growth process. The solution is carried out by using a Finite Volume Method. Study of the direction and the intensity of the applied magnetic field effects on stabilizing the double diffusive flow field were also carried out. Simulation results indicate that the use of a static, magnetic field in this growth setup is effective in suppressing natural convection in the solution.

scholarly journals Теплоемкость скандобората NdSc-=SUB=-3-=/SUB=-(BO_3)-=SUB=-4-=/SUB=-

2021 ◽  
Vol 63 (12) ◽  
pp. 2226
Author(s):  
Е.В. Еремин ◽  
Н.Д. Андрюшин ◽  
И.А. Гудим ◽  
М.С. Павловский ◽  
В.Р. Титова
Keyword(s):  
Magnetic Field ◽  
Heat Capacity ◽  
Low Temperature ◽  
Single Crystals ◽  
Temperature Region ◽  
Applied Magnetic Field ◽  
Molar Heat Capacity ◽  
Group Method ◽  
Lattice Contribution ◽  
Einstein Model

Single crystals of trigonal neodymium scandoborate NdSc3(BO3)4 were grown by the group method from a solution-melt based on bismuth trimolybdate. The molar heat capacity C(T) was studied in the temperature range 2-300 K and magnetic fields up to 9 T. The experimental curve was approximated by the combined Debye-Einstein model. The lattice contribution was determined from ab-initio calculations. Schottky anomaly was observed in the low-temperature region C(T) with the applied magnetic field.

A COMPARISON OF RESISTANCE BROADENING IN MAGNETIC FIELD OF SINGLE CRYSTAL YBa2Cu3O7−δ AND THE ORGANIC SUPERCONDUCTOR κ-(BEDT-TTF)2Cu[N(CN)2]Br

1991 ◽  
Vol 05 (08) ◽  
pp. 547-554 ◽  
Author(s):  
W.K. KWOK
Keyword(s):  
Magnetic Field ◽  
Single Crystal ◽  
Temperature Dependence ◽  
Single Crystals ◽  
Applied Magnetic Field ◽  
Organic Superconductor ◽  
High Magnetic Fields ◽  
Resistive Transition ◽  
Resistivity Measurements ◽  
Zero Resistance

AC resistivity measurements in fields up to 8 Tesla in fully oxygenated and oxygen deficient single crystals of YBa 2 Cu 3 O 7−δ are presented. Fully oxygenated crystals show the characteristic ‘fantail’ broadening in magnetic field where the onset temperature remains virtually independent of the applied magnetic field and the zero resistance temperature decreases dramatically. However, in oxygen deficient crystals, the temperature dependence of the resistivity undergoes a change in shape at high magnetic fields. These results are compared with the recently discovered highest Tc=11.6 K organic superconductor κ- (ET) 2 Cu[N(CN) 2] Br where the shape of the resistive transition for H||b undergoes a change from a ‘fantail’ resistive broadening in magnetic field to that of a more conventional low Tc superconductor.

Sign in / Sign up

Export Citation Format

Share Document