1. Hot Pressing of Potassium-Sodium Niobates
2. 2Y. Saito , "Piezoelectric Material Composition of Alkali Metal-Containing Niobium Oxide "; Published Japan Patent Application, 2000-313664 (2000) [in Japanese].
3. 3Y. Saito , "Alkali Metal-Containing Niobate-Based Piezoelectric Material Composition and a Method for Producing the Same "; United States Patent, 6,387,295 (2002).
4. 4Y. Saito, and H. Takao , "Nb-Perovskite Structured Piezoelectric Ceramics for Sensor and Actuator "; pp.103 -7 . The 12th U.S.-Japan Seminar on Dialectric and Piezoelectric Ceramics Program Summary and Extended Abstracts, 2005.11.
5. Sinterability and Piezoelectric Properties of (K,Na)NbO3Ceramics with Novel Sintering Aid