Title:
PIEZOELECTRIC LAYERED ELEMENT
Document Type and Number:
WIPO Patent Application WO/2023/063356
Kind Code:
A1
Abstract:
Provided is a piezoelectric layered element with which optimal piezoelectric properties can be obtained even when using a thin-layer layered structure that includes an internal electrode layer having Ni as the main component. This piezoelectric layered element is characterized by comprising a plurality of piezoelectric ceramic layers, an internal electrode layer that is provided between the piezoelectric ceramic layers, and an external electrode that is electrically connected to the internal electrode layer, wherein the piezoelectric ceramic layers are each composed of an Mn-containing piezoelectric material and an oxide including Ba, Ca, Ti, and Zr, the molar ratio x of Ca to the sum of Ba and Ca is 0.005 ≤ x ≤ 0.0175, the molar ratio y of Zr to the sum of Ti and Zr is 0.005 ≤ y ≤ 0.0175, the amount of Mn relative to 100 parts by weight of the oxide is 0.15 parts by weight to 5.0 parts by weight, inclusive, in terms of MnO, and Ni is the main component of the internal electrode layer.
Inventors:
KATO MASANORI (JP)
KAWADA SHINICHIRO (JP)
KAWADA SHINICHIRO (JP)
Application Number:
PCT/JP2022/038058
Publication Date:
April 20, 2023
Filing Date:
October 12, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H10N30/853; C04B35/468; H10N30/06; H10N30/50; H10N30/87
Foreign References:
| JP2014172799A | 2014-09-22 | |||
| JP2012206889A | 2012-10-25 | |||
| JPH0645182A | 1994-02-18 |
Attorney, Agent or Firm:
WISEPLUS IP FIRM (JP)
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