1. Smolenskii G-A, Isupov V-A, Agranovskaya A-I, Krainik NN (1960) New materials of AIIBIVOVI type. Sov Phys Solid State 2:2982–2985
2. Jo W, Dittmer R, Acosta M, Zang J, Groh C, Sapper E, Wang K, Rodel J (2012) Giant electric-field-induced strains in lead-free ceramics for actuator applications-status and perspective. J Electroceram 29:71–93
3. Sung Y-S, Kim J-M, Cho J-H (2011) Effects of Bi nonstoichiometry in (Bi0.5+xNa)TiO3 ceramics. Appl Phys Lett 98:123
4. Hiruma Y, Nagata H, Takenaka T (2009) Thermal depoling process and piezoelectric properties of bismuth sodium titanate ceramics. J Appl Phys 105:2651
5. Naderer M, Kainz T, Schütz D (2014) The influence of Ti-nonstoichiometry in Bi0.5Na0.5TiO3. J Eur Ceram Soc 34:663–667