Characterization of Growth Hillocks on the Surface of High-Pressure Synthetic Diamonds
YIN Long-Wei1 , LI Mu-Sen1 , YUAN Quan2 , XU Bin1 , HAO Zhao-Yin3
1 College of Materials Science and Engineering, Shandong University, Ji’nan 250061
2 College of Mechanical Science and Engineering, Shandong University, Ji’nan 250061
3 National Key Laboratory for Superhard Materials, Jilin University, Changchun 130012
Characterization of Growth Hillocks on the Surface of High-Pressure Synthetic Diamonds
YIN Long-Wei1 ;LI Mu-Sen1 ;YUAN Quan2 ;XU Bin1 ;HAO Zhao-Yin3
1 College of Materials Science and Engineering, Shandong University, Ji’nan 250061
2 College of Mechanical Science and Engineering, Shandong University, Ji’nan 250061
3 National Key Laboratory for Superhard Materials, Jilin University, Changchun 130012
关键词 ：
81.10.-h ,
81.10.Aj ,
61.72.Hh ,
81.65.Cf ,
81.10.Dn
Abstract ： Diamond crystals, with dimensions of about 0.5-0.6 mm, were synthesized in the presence of Fe-Ni and Fe-Ni-Si catalyst solvents under high-pressure-high-temperature (HPHT) conditions. The as-known dendritic pattern was clearly seen on the (111) or (100) planes of diamond single crystals grown using Fe-Ni as a catalyst solvent. However, the conventional dendritic pattern was not observed in diamonds grown in the presence of Fe-Ni-Si alloy catalyst. Trigonal-type, pyramid-type, polygonal-type, and rectangular-type growth hillocks were clearly observed on the (111) and (100) surfaces of diamonds grown from the Fe-Ni-Si-C system, and the density of the hillocks is very higher at some position. Clear successive growth layers can also be found on the (111) planes of the high-pressure diamond single crystals grown in the presence of Fe-Ni Si alloy catalyst. The growth hillocks distributing on the (111) and (100) planes of the diamonds generally occur on or near growth steps, and some of the hillocks terminate at certain solid inclusions and voids. Growth hillocks on the (111) and (100) surfaces directly indicate the spiral growth mechanism under high temperature-high pressure (HPHT). A possible formation process for growth hillocks is proposed.
Key words ：
81.10.-h
81.10.Aj
61.72.Hh
81.65.Cf
81.10.Dn
出版日期: 2002-11-01
:
81.10.-h
(Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
81.10.Aj
(Theory and models of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
61.72.Hh
(Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, EPR, NMR, etc.))
81.65.Cf
(Surface cleaning, etching, patterning)
81.10.Dn
(Growth from solutions)
引用本文:
YIN Long-Wei;LI Mu-Sen;YUAN Quan;XU Bin;HAO Zhao-Yin. Characterization of Growth Hillocks on the Surface of High-Pressure Synthetic Diamonds[J]. 中国物理快报, 2002, 19(11): 1707-1710.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2002/V19/I11/1707
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2002, Vol. 19 
