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 Poisson’s ratio 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 denote the Poisson’s ratios of m-Si3N4, m-Si2GeN4, m-SiGe2N4, and m-Ge3N4, respectively.