Electrical conductivity and ferroelastic properties of Ti-substituted solid solutions (1 − x ) BiFeO 3 – x Bi 0.5 K 0.5 TiO 3 - Wefring, Espen Tjønneland; Schader, Florian H.; Webber, Kyle G.; Einarsrud, Mari-Ann; Grande, Tor (Journal of the European Ceramic Society, 2016)