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PIEZOELECTRIC ELEMENT AND PIEZOELECTRIC ELEMENT APPLIED DEVICE
PROBLEM TO BE SOLVED: To provide a piezoelectric element with improved piezoelectric characteristics and a device applied with the piezoelectric element.SOLUTION: A piezoelectric element 300 includes: a first electrode 60; a piezoelectric layer 70 formed on the first electrode 60 by a solution method, which is composed of a complex oxide having a perovskite type structure of a crystal structure other than pseudocubic including potassium, sodium, and niobium; and a second electrode 80 formed on the piezoelectric layer 70. The piezoelectric layer 70 has a change point at a temperature lower than the Curie temperature in a viewpoint of a temperature change of relative dielectric constant.SELECTED DRAWING: Figure 3
【課題】圧電特性の向上した圧電素子及び圧電素子応用デバイスを提供する。【解決手段】第１電極６０と、前記第１電極６０上に溶液法によって形成され、カリウムと、ナトリウムと、ニオブと、を含む擬立方晶以外の結晶構造を有するペロブスカイト型構造の複合酸化物からなる圧電体層７０と、前記圧電体層７０上に設けられた第２電極８０と、を備えた圧電素子３００であって、前記圧電体層７０は、比誘電率の温度変化をみたとき、キュリー温度よりも低い温度で変化点を有する。【選択図】図３
PIEZOELECTRIC ELEMENT AND PIEZOELECTRIC ELEMENT APPLIED DEVICE
PROBLEM TO BE SOLVED: To provide a piezoelectric element with improved piezoelectric characteristics and a device applied with the piezoelectric element.SOLUTION: A piezoelectric element 300 includes: a first electrode 60; a piezoelectric layer 70 formed on the first electrode 60 by a solution method, which is composed of a complex oxide having a perovskite type structure of a crystal structure other than pseudocubic including potassium, sodium, and niobium; and a second electrode 80 formed on the piezoelectric layer 70. The piezoelectric layer 70 has a change point at a temperature lower than the Curie temperature in a viewpoint of a temperature change of relative dielectric constant.SELECTED DRAWING: Figure 3
【課題】圧電特性の向上した圧電素子及び圧電素子応用デバイスを提供する。【解決手段】第１電極６０と、前記第１電極６０上に溶液法によって形成され、カリウムと、ナトリウムと、ニオブと、を含む擬立方晶以外の結晶構造を有するペロブスカイト型構造の複合酸化物からなる圧電体層７０と、前記圧電体層７０上に設けられた第２電極８０と、を備えた圧電素子３００であって、前記圧電体層７０は、比誘電率の温度変化をみたとき、キュリー温度よりも低い温度で変化点を有する。【選択図】図３
PIEZOELECTRIC ELEMENT AND PIEZOELECTRIC ELEMENT APPLIED DEVICE
圧電素子、及び圧電素子応用デバイス
KITADA KAZUYA (Autor:in)
09.03.2017
Patent
Elektronische Ressource
Japanisch
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