Seedless THM growth of CdxHg1−xTe (x≈0.2) single crystals within rotating magnetic field

Growth of single crystals under magnetic field is of interest for suppressing the adverse effect of natural convection and for better mixing in the liquid solution, which are the favorable conditions for prolonged growth and high quality crystals. In this short review article, recent developments in the modelling of electroepitaxy under magnetic field are presented. An application is given for the liquid phase electroepitaxial growth of GaAs bulk single crystals under a static magnetic field. Experimental results, that have shown that the growth rate under an applied static magnetic field is proportional to the applied magnetic field, and increases with the field intensity level, are predicted from the present model. The model also predicts growth interface shapes accurately.

Section: Total Mobility-effect Of Applied Magnetic Field On Electromimentioning

confidence: 99%

Recent developments in modelling of liquid phase electroepitaxy under applied magnetic field

Dost

Sheibani

Liu

et al. 2005

“…The use of rotating magnetic fields (RMF) in THM has been considered in numerical and experimental studies to promote compositional uniformity near the growth interface (particularly in cadmium telluride [8][9][10]). It was shown in some cases that the application of RMF increases growth rate up to 100% [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…It was shown in some cases that the application of RMF increases growth rate up to 100% [8][9][10]. This is still far from bringing THM to the typical speeds of melt growth techniques.…”

Section: Introductionmentioning

confidence: 99%

Crystal growth by the travelling heater method using tapered crucibles and applied rotating magnetic field

Roszmann

Dost²,

Lent

2010

Crystal growth experiments were carried out by the Travelling Heater Method using tapered growth ampoules with and without the application of a rotating magnetic field. The objective was to enhance its commercial potential by reducing the size of required seed crystals and increasing the growth rate. To this end, a number of GaSb crystals were grown using either 25 mm diameter straight, or 10 mm to 25 mm tapered growth ampoules. Growth rates of 2 mm/day and 5 mm/day were employed. The effect of rotating magnetic fields of several strengths and frequencies was examined.

“…The concentration of impurities could then be reduced down to a few ppb. Crystals were grown by the conventional Bridgman method with and without Cd-source, by High Pressure Bridgman (HPBM) [3], Vertical Gradient Freeze (VGF) [4] or the Travelling Heater Method (THM) [5]. But all grown crystals still consist of twins or even large grains; it is not possible to grow single crystals.…”

Section: Introductionmentioning

confidence: 99%

Dewetted growth of CdTe in microgravity (STS‐95)

Fiederle¹,

Duffar²,

Babentsov³

et al. 2004