Substrate strain and doping effects on the crystal structure of SrNbxTi1−xO3 Luis C.O. Dacal, Andres Cantarero and Valerio Olevano Eur. Phys. J. B, 92 8 (2019) 181 Published online: 12 August 2019 DOI: 10.1140/epjb/e2019-100120-4