Details
| Original language | English |
|---|---|
| Pages (from-to) | 1540-1545 |
| Number of pages | 5 |
| Journal | Journal of Crystal Growth |
| Volume | 310 |
| Issue number | 7-9 |
| Early online date | 6 Nov 2007 |
| Publication status | Published - Apr 2008 |
Abstract
Three-dimensional (3D) electromagnetic computer modeling is used to analyze the effects of asymmetry at the crystal growth by the vertical gradient freeze (VGF) and liquid encapsulation Czochralski (LEC) methods under traveling magnetic fields (TMF). Based on the results a heater-magnet module (HMM), combining the generation of heat and induction of magnetic field, was developed and optimized. It will be shown that asymmetry effects are caused by the designs of the heater-magnet coils and bus bars. They are enforced when a TMF of higher frequencies is used. It can be concluded that for VGF arrangements without container rotation the module design must be modified. Compared to that in case of LEC the effect of asymmetry can be effectively graduated by crucible and crystal rotations.
Keywords
- A1. Computer simulation, A2. Magnetic field-assisted methods
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Inorganic Chemistry
- Materials Science(all)
- Materials Chemistry
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In: Journal of Crystal Growth, Vol. 310, No. 7-9, 04.2008, p. 1540-1545.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Investigation of asymmetry effects in a heater-magnet module for TMF VGF and LEC growth by three-dimensional numerical modeling
AU - Kasjanow, H.
AU - Nacke, B.
AU - Eichler, St
AU - Jockel, D.
AU - Frank-Rotsch, Ch
AU - Lange, P.
AU - Kießling, F. M.
AU - Rudolph, P.
PY - 2008/4
Y1 - 2008/4
N2 - Three-dimensional (3D) electromagnetic computer modeling is used to analyze the effects of asymmetry at the crystal growth by the vertical gradient freeze (VGF) and liquid encapsulation Czochralski (LEC) methods under traveling magnetic fields (TMF). Based on the results a heater-magnet module (HMM), combining the generation of heat and induction of magnetic field, was developed and optimized. It will be shown that asymmetry effects are caused by the designs of the heater-magnet coils and bus bars. They are enforced when a TMF of higher frequencies is used. It can be concluded that for VGF arrangements without container rotation the module design must be modified. Compared to that in case of LEC the effect of asymmetry can be effectively graduated by crucible and crystal rotations.
AB - Three-dimensional (3D) electromagnetic computer modeling is used to analyze the effects of asymmetry at the crystal growth by the vertical gradient freeze (VGF) and liquid encapsulation Czochralski (LEC) methods under traveling magnetic fields (TMF). Based on the results a heater-magnet module (HMM), combining the generation of heat and induction of magnetic field, was developed and optimized. It will be shown that asymmetry effects are caused by the designs of the heater-magnet coils and bus bars. They are enforced when a TMF of higher frequencies is used. It can be concluded that for VGF arrangements without container rotation the module design must be modified. Compared to that in case of LEC the effect of asymmetry can be effectively graduated by crucible and crystal rotations.
KW - A1. Computer simulation
KW - A2. Magnetic field-assisted methods
UR - http://www.scopus.com/inward/record.url?scp=41449103394&partnerID=8YFLogxK
U2 - 10.1016/j.jcrysgro.2007.10.077
DO - 10.1016/j.jcrysgro.2007.10.077
M3 - Article
AN - SCOPUS:41449103394
VL - 310
SP - 1540
EP - 1545
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
IS - 7-9
ER -