Patent ID: 7120978
Filing Date: 2006-10-17
Classification: B41J,H01L,Y10T

Abstract:
1. A method for manufacturing a piezoelectric element structure having a supporting substrate and a piezoelectric single crystal film or a piezoelectric single orientational crystal film supported on the supporting substrate, said method comprising the steps of: forming by a vapor method on the supporting substrate, in this order, a first layer having a perovskite structure and a second layer having a perovskite structure and zirconium, a temperature at a time of deposition of the first and second layers being at least 500° C. during the vapor method, and the first layer being formed so as to contain no zirconium or an amount of zirconium less than an amount of zirconium contained in the second layer; and subsequently cooling from the deposition temperature at least to 450° C. with a cooling speed of at least 30° C./minute.