Dependence of nitrogen concentration in type Ib diamonds on synthesis temperature

• Published in: Chinese science bulletin Vol. 54; no. 9; pp. 1459 - 1462
• Main Authors: Tian, Yu, Jia, XiaoPeng, Zang, ChuanYi, Li, ShangSheng, Xiao, HongYu, Zhang, YaFei, Huang, GuoFeng, Li, Rui, Han, QiGang, Ma, LiQiu, Li, Yong, Chen, XiaoZhou, Zhang, Chong, Ma, HongAn
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science in China Press 01.05.2009
• Subjects: Articles/Condensed Matter Physics; Chemistry/Food Science; Earth Sciences; Engineering; Humanities and Social Sciences; Life Sciences; multidisciplinary; Physics; Science; Science (multidisciplinary); 依赖型; 傅里叶变换红外光谱; 合成温度; 合成金刚石; 合成钻石; 氮浓度; 温度梯度法; synthesis temperature; nitrogen concentration; diamond; infrared spectrum
• ISSN: 1001-6538; 2095-9273; 1861-9541; 2095-9281
• DOI: 10.1007/s11434-009-0211-6

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.