Dreiling D, Feldmann N, Henning B. A DC bias approach to the characterisation of non-linear material parameters of piezoelectric ceramics. In: AMA Service GmbH; 2019. doi:10.5162/sensoren2019/5.1.2

Isobe G, Maeda T, Bornmann P, Hemsel T, Morita T. Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48N.52)NBO3 ceramics. Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on. 2014;61(2):225-230. doi:10.1109/TUFFC.2014.6722608

Maeda T, Takiguchi N, Morita T, Ishikawa M, Hemsel T. (K,Na)NbO3 lead-free piezoelectric ceramics synthesized from hydrothermal powders. Materials Letters. 2010;64(2):125-128. doi:10.1016/j.matlet.2009.10.012