Title :
Growth of Potassium Sodium Lithiun Niobate-Tantalate Single Crystals for Piezoelectric Applications
Author :
Adachi, Masatoshi ; Norimatsu, Yoshiki ; Fujioka, Masashi ; Karaki, Tomoaki
Author_Institution :
Toyama Prefectural Univ., Toyama
Abstract :
Recently, lead free materials are being extensively investigated to replace the PZT ceramics. Potassium niobate (KNbO3) single crystals were successfylly grown by the TSSG technique. However, potassium niobate has problems of three phase transition temperatures (cubic to tetragonal, tetragonal to orthorhombic and orthorhombic-rhombohedoral), the orthorhombic structure at room temperature and complicated domain structures. To improve these properties of this potassium niobate, (K,Na,Li)(Nb,Ta)O3 has been grown by the TSSG method.
Keywords :
crystal growth from solution; crystal structure; permittivity; piezoceramics; potassium compounds; solid-state phase transformations; KNbO3; PZT ceramics; TSSG technique; cubic-tetragonal phase transition; domain structure; orthorhombic-rhombohedoral phase transition; phase transition temperatures; piezoelectric application; potassium niobate; potassium sodium lithiun niobate-tantalate single crystals; tetragonal-orthorhombic phase transition; Acoustic waves; Ceramics; Crystalline materials; Crystals; Design engineering; Environmentally friendly manufacturing techniques; Niobium compounds; Piezoelectric materials; Surface acoustic waves; Temperature;
Conference_Titel :
Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on
Conference_Location :
Nara
Print_ISBN :
978-1-4244-1334-8
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2007.4393338
