Advanced Materials, Vol.20, No.17, 3303-3303, 2008
X-ray induced synthesis of 8H diamond
The 8H diamond synthesized by X-ray radiation has a hexagonal unit cell [P63/mmc (#194)] with 16 carbon atoms in the unit cell and can be described as 75% cubic diamond (3C) and 25% lonsdaleite (2H). The stability of 8H diamond is confirmed by first-principles calculations.