Abstract
The regulating nitrogen content of diamond in a hydrogen-rich high-temperature and high-pressure(HPHT)growth environment was systematically investigated in this work by developing three growth systems,namely,"FeNi+Ti","FeNi+C3N6H6",and"FeNi+Ti+C3N6H6".Optical microscopy,infrared spectroscopy,and photoluminescence(PL)spectroscopy measurements were conducted to analyze the spectroscopic characteristics of diamonds grown in these three systems.From our analysis,it was demonstrated that the presence of hydrogen in the sp3 hybrid C-H does not directly affect the color of the diamond and facilitates the increase of the nitrogen-vacancy(NV)center concentration in a high-nitrogen-content diamond.In addition,titanium plays an important role in nitrogen removal,while its impact on hydrogen doping within the diamond lattice is insignificant.Most importantly,by regulating the ratio of nitrogen impurities that coexist in the nitrogen and hydrogen HPHT environment,the production of hydrogenous Ⅱa-type diamond,hydrogenous Ib-type diamond,and hydrogenous high-nitrogen-type diamonds was achieved with a nitrogen content of less than 1 ppm to 1600 ppm.
基金项目
国家自然科学基金(12274373)
国家自然科学基金(12004341)
Open Project of Inner Mongolia Key Laboratory of Highpressure Phase Functional Materials,Chifeng University(cfxygy202301)
Science and Technology Project of Xilinguole Province(202209)
河南省自然科学基金(242300421155)
NETL
NSTL
万方数据