FEM simulations and experimental studies of the temperature field in a large diamond crystal growth cell |
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Authors: | Li Zhan-Chang Jia Xiao-Peng Huang Guo-Feng Hu Mei-Hua Li Yong Yan Bing-Min a and Ma Hong-An |
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Institution: | a State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;b School of Physics and Electronic Engineering, Chifeng College, Chifeng 024000, China |
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Abstract: | We investigate the temperature fields varying in growth region of a diamond crystal in a sealed cell during the whole process of crystal growth by the temperature gradient method (TGM) at high pressure and high temperature (HPHT). We employ both the finite element method (FEM) and in situ experiments. Simulation results show that the temperature in the center area of the growth cell continues to decrease during the process of large diamond crystal growth. These results are in good agreement with our experimental data, which demonstrates that the finite element model can successfully predict the temperature field variations in the growth cell. The FEM simulation will be useful to grow larger high-quality diamond crystals by TGM. Furthermore, this method will be helpful in designing better cells and improving the growth process of gem-quality diamond crystal. |
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Keywords: | temperature field finite element method single crystal growth diamond |
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