Open AccessFinite element method study on the temperature distribution in the cell of large single crystal diamond
Author(s) -
Qing Han,
Hongan Ma,
Hang Xiao,
Li Rui,
Cong Zhang,
Zhan-Chang Li,
Yu Tian,
Xiaopeng Jia
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.1923
Subject(s) - diamond , temperature gradient , materials science , finite element method , crystal (programming language) , single crystal , carbon fibers , work (physics) , seed crystal , synthetic diamond , heat transfer , mechanics , thermodynamics , crystallography , composite material , chemistry , physics , composite number , quantum mechanics , computer science , programming language
The temperature distribution in the cell of single crystal diamond grown by the temperature gradient method has been studied, which is based on the finite element method. Our results shwo that the temperature distribution in the synthetic process of single crystal diamond is not uniform. The highest temperature in the cell is located at the outside of single carbon solvent, and the lowest temperature in the cell is located near the diamond seed. The heat transfer and the mass transport have a same direction from outside of carbon source to diamond seed. The temperature gradient in the axial direction is higher than that in the radial direction, which explains why the size of synthetic single crystal diamond in the axial direction is larger than that in the radial direction. The model will be useful for the design of single crystal diamond grown by the temperature gradient method. Furthermore, this work will be hopeful to improve the cubic anvil type high pressure techniques for the synthesis of high quality diamond crystals.