@article{ART003133167},
author={Jooe-Hyuk Kang and Won-Bae Sohn and Jeon Su Jong and Kim Jin-Hyeok and Seon Hoon Kim},
title={Thermal gradient for LiTaO₃ single crystal growth: A simulation study},
journal={Journal of the Korean Crystal Growth and Crystal Technology},
issn={1225-1429},
year={2024},
volume={34},
number={5},
pages={143-148},
doi={10.6111/JKCGCT.2024.34.5.143}
TY - JOUR
AU - Jooe-Hyuk Kang
AU - Won-Bae Sohn
AU - Jeon Su Jong
AU - Kim Jin-Hyeok
AU - Seon Hoon Kim
TI - Thermal gradient for LiTaO₃ single crystal growth: A simulation study
JO - Journal of the Korean Crystal Growth and Crystal Technology
PY - 2024
VL - 34
IS - 5
PB - The Korea Association Of Crystal Growth, Inc.
SP - 143
EP - 148
SN - 1225-1429
AB - LiTaO₃ (Lithium Tantalate) single crystals are widely used in Surface Acoustic Wave (SAW) filters due to their excellent piezoelectric and optical properties. High-quality LiTaO₃ single crystals were preferably grown by czochralski methods for RF Saw filter applications. However, if the growth conditions are not optimized, internal cracks and defects which degrade piezoelectric performance tend to occur. To solve these problems, we should consider temperature gradient and thermal insulation to decrease thermal stress. In this study, an iridium cover was added above the iridium crucible to decrease temperature gradients and improve thermal insulation. The simulation results indicated that the temperature in the central region of the melt increased by up to 8.6K in the vertical direction and up to 6.4K in the radial direction. The addition of the iridium cover resulted in increases in both the maximum and minimum temperatures. In the vertical direction, the maximum temperature increased by 6.4K and the minimum temperature by 8.5K. In the horizontal direction, the maximum temperature increased by 2.6K, and the minimum temperature rose by 2.2K after applying the cover. The temperature gradient was also reduced with the addition of the iridium cover. The vertical temperature gradient decreased by approximately 39 %, while the radial temperature gradient decreased by 50 %. These results indicate that the iridium cover improves the thermal insulation and reduces the temperature gradient in the furnace.
KW - Lithium tantalate;Single crystal;Hot-zone;Simulation;Temperature gradient
DO - 10.6111/JKCGCT.2024.34.5.143
ER -
Jooe-Hyuk Kang, Won-Bae Sohn, Jeon Su Jong, Kim Jin-Hyeok and Seon Hoon Kim. (2024). Thermal gradient for LiTaO₃ single crystal growth: A simulation study. Journal of the Korean Crystal Growth and Crystal Technology, 34(5), 143-148.
Jooe-Hyuk Kang, Won-Bae Sohn, Jeon Su Jong, Kim Jin-Hyeok and Seon Hoon Kim. 2024, "Thermal gradient for LiTaO₃ single crystal growth: A simulation study", Journal of the Korean Crystal Growth and Crystal Technology, vol.34, no.5 pp.143-148. Available from: doi:10.6111/JKCGCT.2024.34.5.143
Jooe-Hyuk Kang, Won-Bae Sohn, Jeon Su Jong, Kim Jin-Hyeok, Seon Hoon Kim "Thermal gradient for LiTaO₃ single crystal growth: A simulation study" Journal of the Korean Crystal Growth and Crystal Technology 34.5 pp.143-148 (2024) : 143.
Jooe-Hyuk Kang, Won-Bae Sohn, Jeon Su Jong, Kim Jin-Hyeok, Seon Hoon Kim. Thermal gradient for LiTaO₃ single crystal growth: A simulation study. 2024; 34(5), 143-148. Available from: doi:10.6111/JKCGCT.2024.34.5.143
Jooe-Hyuk Kang, Won-Bae Sohn, Jeon Su Jong, Kim Jin-Hyeok and Seon Hoon Kim. "Thermal gradient for LiTaO₃ single crystal growth: A simulation study" Journal of the Korean Crystal Growth and Crystal Technology 34, no.5 (2024) : 143-148.doi: 10.6111/JKCGCT.2024.34.5.143
Jooe-Hyuk Kang; Won-Bae Sohn; Jeon Su Jong; Kim Jin-Hyeok; Seon Hoon Kim. Thermal gradient for LiTaO₃ single crystal growth: A simulation study. Journal of the Korean Crystal Growth and Crystal Technology, 34(5), 143-148. doi: 10.6111/JKCGCT.2024.34.5.143
Jooe-Hyuk Kang; Won-Bae Sohn; Jeon Su Jong; Kim Jin-Hyeok; Seon Hoon Kim. Thermal gradient for LiTaO₃ single crystal growth: A simulation study. Journal of the Korean Crystal Growth and Crystal Technology. 2024; 34(5) 143-148. doi: 10.6111/JKCGCT.2024.34.5.143
Jooe-Hyuk Kang, Won-Bae Sohn, Jeon Su Jong, Kim Jin-Hyeok, Seon Hoon Kim. Thermal gradient for LiTaO₃ single crystal growth: A simulation study. 2024; 34(5), 143-148. Available from: doi:10.6111/JKCGCT.2024.34.5.143
Jooe-Hyuk Kang, Won-Bae Sohn, Jeon Su Jong, Kim Jin-Hyeok and Seon Hoon Kim. "Thermal gradient for LiTaO₃ single crystal growth: A simulation study" Journal of the Korean Crystal Growth and Crystal Technology 34, no.5 (2024) : 143-148.doi: 10.6111/JKCGCT.2024.34.5.143
