Dependence of Crystal Quality and β Value on Synthesis Temperature in Growing Gem Diamond Crystals
Creators
- 1. National Lab of Superhard Materials, Jilin University, Changchun 130012 (China)
- 2. Institute of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000 (China)
Description
High quality Ib gem diamond single crystals were synthesized in cubic anvil high-pressure apparatus (SPD-6 × 1200) under 5.4 GPa and 1230°C-1280°C. The (100) face of seed crystal was used as growth face, and Ni70Mn25Co5 alloy was used as solvent/catalyst. The dependence of crystal quality and β value (the ratio of height to diameter of diamond crystal) on synthesis temperature was studied. When the synthesis temperature is between 1230°C and 1280°C, the β value of the synthetic high-quality gem diamond crystals is between 0.4 and 0.6. The results show that when the β value is between 0.4 and 0.45, the synthetic diamonds are sheet-shape crystals; however, when the β value is between 0.45 and 0.6, the synthetic diamonds are tower-shape crystals. In addition, when the β value is less than 0.4, skeleton crystals will appear. When the β value is more than 0.6, most of the synthetic diamond crystals are inferior crystals
Availability note (English)
Available from http://dx.doi.org/10.1088/0256-307X/25/4/082Additional details
Identifiers
Publishing Information
- Journal Title
- Chinese Physics Letters
- Journal Volume
- 25
- Journal Issue
- 4
- Journal Page Range
- p. 1469-1471
- ISSN
- 0256-307X
- CODEN
- CPLEEU
INIS
- Country of Publication
- China
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 44112841
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- CATALYSTS; CRYSTAL GROWTH; DIAMONDS; MONOCRYSTALS; NICKEL ALLOYS; PRESSURE RANGE GIGA PA; SYNTHESIS; TEMPERATURE DEPENDENCE
- Descriptors DEC
- ALLOYS; CARBON; CRYSTALS; ELEMENTS; MINERALS; NONMETALS; PRESSURE RANGE; TRANSITION ELEMENT ALLOYS