Erratum: The origin of low bandgap and ferroelectricity of a co-doped BaTiO3 D. Phuyal, S. Mukherjee, S. Das, S. Jana, K. O. Kvashnina, D. D. Sarma, H. Rensmo, S. M. Butorin and O. Karis EPL, 124 6 (2018) 69901 Published online: 10 January 2019 DOI: 10.1209/0295-5075/124/69901