11:15 AM - 11:30 AM [15a-D419-9] Composition dependence of crystal structure and piezoelectric properties of epitaxial (K, Na)NbO3 thin films grown on Si substrates 〇Yoshikazu Sai1, Takuya Fujita1, Tan Goon1, Isaku Kanno1 (1.Kobe Univ.)