Effect of FeS doping on large diamond synthesis in FeNi–C system<xref rid="cpb_27_8_088102fn1" ref-type="fn">*</xref><fn id="cpb_27_8_088102fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant No. 51772120), the Project for Key Science and Technology Research of Henan Province, China (Grant Nos. 162102210275 and 172102210283), the Key Scientific Research Project in Colleges and Universities of Henan Province, China (Grant Nos. 18A430017 and 17A430020), and the Professional Practice Demonstration Base for Professional Degree Graduate in Material Engineering of Henan Polytechnic University, China (Grant No. 2016YJD03)</p></fn>

Effect of FeS doping on large diamond synthesis in FeNi–C system**

Project supported by the National Natural Science Foundation of China (Grant No. 51772120), the Project for Key Science and Technology Research of Henan Province, China (Grant Nos. 162102210275 and 172102210283), the Key Scientific Research Project in Colleges and Universities of Henan Province, China (Grant Nos. 18A430017 and 17A430020), and the Professional Practice Demonstration Base for Professional Degree Graduate in Material Engineering of Henan Polytechnic University, China (Grant No. 2016YJD03)

Wang Jian-Kang¹, Li Shang-Sheng^{2, †}, Jiang Quan-Wei¹, Song Yan-Ling¹, Yu Kun-Peng¹, Han Fei¹, Su Tai-Chao¹, Hu Mei-Hua¹, Hu Qiang², Ma Hong-An³, Jia Xiao-Peng³, Xiao Hong-Yu⁴

FTIR absorption spectra of diamonds with FeS content of (a) 0%, (b) 0.5%, (c) 0.7%, (d) 1%, (e) 1.5%, and (f) 2%.