Effects of nano-sized BiFeO3 addition on the properties of high piezoelectric response (1 ? x)Bi0.5Na0.5TiO3?xBi0.5K0.5TiO3 ceramics - Moosavi, A.; Bahrevar, M.A.; Aghaei, A.R.; Castro, A.; Ramos, P.; Algueró, M.; Amorín, H. (Journal of Materials Science, 2015)