Synthesis of N-type semiconductor diamonds with sulfur, boron co-doping in FeNiMnCo-C system at high pressure and high temperature

Zhang He¹, Li Shangsheng^{1, †}, Su Taichao¹, Hu Meihua¹, Ma Hongan², Jia Xiaopeng², Li Yong³

(color online) Photographs of large diamonds synthesized with different contents of sulfur and boron ((a) with 0.2% B and 2% S, (b) with 0.8% B and 2% S, (c) with 1.2 % B and 2% S).