Mechanical, elastic, anisotropy, and electronic properties of monoclinic phase of m-SixGe3−xN4
Ma Zhen-Yang, Yan Fang, Wang Su-Xin, Jia Qiong-Qiong, Yu Xin-Hai, Shi Chun-Lei
       

(color online) Calculated lattice parameters ((a) a, (b) b, and (c) c) of m-Si3N4, m-Si2GeN4, m-SiGe2N4, and m-Ge3N4 by PBE, PBEsol, and CA-PZ methods.