Dependence of nitrogen concentration in type Ib diamonds on synthesis temperature

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2009,（9）
• 页码范围: 1459-1462
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11434-009-0211-6

摘要

Type Ib diamonds were grown by the temperature gradient method (TGM) at 5.5 GPa and 1500-1560 K in a china-type cubic anvil high pressure apparatus using Ni70Mn25Co5 alloy as solvent/catalyst. The concentration of nitrogen (CN) in type Ib diamonds synthesized at different synthesis temperatures was measured by a Fourier transform infrared (FTIR) spectrometer. The dependence of CN in diamond on synthesis temperature was studied. For the type Ib diamonds synthesized using Ni70Mn25Co5 as catalyst, its CN decreases along with the increase of synthesis temperature.