FEM simulations and experimental studies of the temperature field in a large diamond crystal growth cell

We investigate the temperature field variation in the growth region of a diamond crystal in a sealed cell during the whole process of crystal growth by using the temperature gradient method （TGM） at high pressure and high temperature （HPHT）. We employ both the finite element method （FEM） and in situ...

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Published inChinese physics B Vol. 22; no. 1; pp. 363 - 367
Main Author 李战厂 贾晓鹏 黄国锋 胡美华 李勇 颜丙敏 马红安
Format Journal Article
LanguageEnglish
Published 2013
Subjects
Computer simulation
Crystal growth
Crystals
Diamonds
Finite element method
Mathematical analysis
Mathematical models
Temperature distribution
Temperature gradient
实验数据
晶体生长过程
有限元模型
有限元模拟
温度场
生长细胞
金刚石单晶
金刚石晶体
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/22/1/014701

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Summary:We investigate the temperature field variation in the growth region of a diamond crystal in a sealed cell during the whole process of crystal growth by using 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 crystal by using the TGM. Furthermore, this method will be helpful in designing better cells and improving the growth process of gem-quality diamond crystal.
Bibliography:temperature field, finite element method, single crystal growth diamond
We investigate the temperature field variation in the growth region of a diamond crystal in a sealed cell during the whole process of crystal growth by using 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 crystal by using the 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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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/22/1/014701