1. 1 T. Wada , K. Toyoike , Y. Imanaka , and Y. Matsuo , “Dielectric and Piezoelectric Properties of (A0.5Bi0.5)TiO3-ANbO3 (A=Na, K) Systems,” Jpn. J. Appl. Phys., 40, 5703-5 (2001).
2. 2 H. Ishii , H. Nagata , and T. Takenaka , “Morphotropic Phase Boundary and Electrical Properties of Bisumuth Sodium Titanate-Potassium Niobate Solid-Solution Ceramics,” Jpn. J. Appl. Phys., 40, 5660-3 (2001).
3. 3 T. R. Shrout and S. J. Zhang , “Lead-free Piezoelectric Ceramics: Alternatives for PZT,” J. Electroceram., 19, 111-24 (2007).
4. 4 R. Wang , R. Xie , T. Sekiya , Y. Shimoju , Y. Akimune , H. Hirosaki , and M. Ito , “Piezoelectric Properties of Spark-Plasma-Sintered (Na0.5K0.5)NbO3-PbTiO3 Ceramics,” Jpn. J. Appl. Phys., 41, 7119-22 (2002).
5. 5 T. Wada , K. Tsuju , T. Saito , and Y. Matsuo , “Ferroelectric NaNbO3 Ceramics Fabricated by Spark Plasma Sintering,” Jpn. J. Appl. Phys., 42, 6110-4 (2003).