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1. (WO2018180772) PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT

Pub. No.:    WO/2018/180772    International Application No.:    PCT/JP2018/011039
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Mar 21 00:59:59 CET 2018
IPC: H01L 41/187
C04B 35/495
H01L 41/083
Applicants: TDK CORPORATION
TDK株式会社
Inventors: KATOH, Hiroki
加藤 浩輝
HIROSE, Yuiko
廣瀬 維子
HIROSE, Masakazu
廣瀬 正和
Title: PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT
Abstract:
Provided is a piezoelectric composition which contains copper and a composite oxide having a perovskite structure and represented by general formula ABO3, wherein in the ABO3, the A site element is potassium, or potassium and sodium, and the B site element is niobium, or niobium and tantalum, copper is contained at a quantity of n mol% in terms of the copper element relative to 1 mole of the composite oxide, n satisfies the relationship 0.100 ≤ n ≤ 1.000, and the piezoelectric composition exhibits good mechanical strength. Also provided is a piezoelectric element comprising the piezoelectric composition.