Abstract
A global analysis of heat transfer was carried out in an inductively heated Czochralski (CZ) furnace which was actually used to grow LiNbO3 single crystals, and then the temperature profiles obtained were used to calculate the three-dimensional thermal stress field in the crystal. By comparing the numerical results with the experimental ones, it was found that controlling the thermal environment in the CZ furnace so that the thermal stresses at the crystal surface might not exceed a certain value is important to realize the cracking free growth operation. In this study, this was accomplished through some modifications in the furnace design such as insertion of an after-heater into the furnace. These findings were verified by additional numerical simulations and crystal growth experiments for some growth conditions.
Original language | English |
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Pages (from-to) | 543-550 |
Number of pages | 8 |
Journal | Journal of Crystal Growth |
Volume | 180 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - 1997 Oct |
Keywords
- Crack formation
- Czochralski method
- Global analysis
- Heat transfer
- LiNbO
- Thermal stress field
ASJC Scopus subject areas
- Condensed Matter Physics
- Inorganic Chemistry
- Materials Chemistry