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) 2D representations of shear modulus in the (001), (010) and (100) planes for m-SixGe3−xN4 (x = 0, 1, 2, 3). The dash dotted and solid lines represent the maximum and minimum values in the (001), (010), and (100) planes, respectively. The black, blue, green and red lines represent the Poisson’s ratios of m-Si3N4, m-Si2GeN4, m-SiGe2N4, and m-Ge3N4, respectively.