2:15 PM - 2:30 PM [8p-Z17-6] Composition dependence of crystal structure and piezoelectric properties of epitaxial (K, Na)NbO3 thin films grown on Si substrates 〇Yoshikazu Sai1, Goon Tan2, Isaku Kanno1 (1.Kobe Univ., 2.Osaka prefecture Univ.)