The mechanical and electrical properties of Nb2 O5 doped Na-β"-Al2O3 solid electrolyteDong Xu, Hongyi Jiang, Yong Li, Ling Li, Ming Li and Ou HaiEur. Phys. J. Appl. Phys., 74 1 (2016) 10901DOI: https://doi.org/10.1051/epjap/2016150466