Theoretical study of mechanical, thermal and optical properties of (Ti1−xNbx)3AlC2 solid solutions Zhao-Yong Jiao, Shu-Hong Ma and Yong-Liang Guo Eur. Phys. J. B, 91 6 (2018) 134 Published online: 27 June 2018 DOI: 10.1140/epjb/e2018-80696-5