PROBLEM TO BE SOLVED: To provide a piezoelectric cell, a piezoelectric element, an ultrasonic probe, and an ultrasonic diagnostic device that are capable of transmitting a sonic wave more isotropically.SOLUTION: A piezoelectric cell 6A according to the present invention includes: a piezoelectric member 61A made of a perovskite type ferroelectric substance and a pair of first and second electrodes 62A and 63A for applying a predetermined voltage to the piezoelectric member 61A, wherein the piezoelectric member 61A is one of a (100) orientation film, in which a pole figure of a (111) plane is distributed in a ring manner, and a (111) orientation film, in which a pole figure of a (100) plane is distributed in a ring manner. A piezoelectric element, an ultrasonic probe, and an ultrasonic diagnostic device according to the present invention includes the piezoelectric cell 6A.COPYRIGHT: (C)2013,JPO&INPIT【課題】本発明は、音波をより等方的に発信し得る圧電セル、圧電素子、超音波探触子および超音波診断装置を提供する。【解決手段】本発明の圧電セル6Aは、ペロブスカイト型強誘電体から形成された圧電部材61Aと、圧電部材61Aに所定の電圧を印加するための一対の第1および第2電極62A、63Aとを備え、圧電部材61Aは、(111)面の極点図がリング状に分布した(100)配向膜および(100)面の極点図がリング状に分布した(111)配向膜のうちのいずれか一方である。そして、本発明の圧電素子、超音波探触子および超音波診断装置は、この圧電セル6Aを備える。【選択図】図6
