A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
To provide a piezoelectric ceramic capable of stably forming a piezoelectric element that is small in mechanical loss when driven with great amplitude at high speed.SOLUTION: A piezoelectric ceramic comprises, as a main component, a compound containing Pb, Zr, Ti, Zn, Nb, Mn and O as constituent elements and having a Perovskite-based structure, wherein, in X-ray diffraction measurements using Cu-K α-rays, a total ratio ((IZT+IZnO)/IP×100) of a maximum peak intensity IZT expressed at 34.0°≤2θ≤35.0° and a maximum peak intensity IZnO expressed at 35.5°≤2θ≤37.0° with respect to a maximum peak intensity IP expressed at 20.0°≤2θ≤40.0° is 0.3% or greater.SELECTED DRAWING: Figure 1
【課題】高速大振幅で駆動した場合の機械的損失が小さい圧電素子を、安定して得ることが可能な圧電セラミックスを提供する。【解決手段】構成元素としてＰｂ、Ｚｒ、Ｔｉ、Ｚｎ、Ｎｂ、Ｍｎ及びＯを含み、ペロブスカイト型構造を有する化合物を主成分とし、かつＣｕ－Ｋα線を用いたＸ線回折測定において、２０．０°≦２θ≦４０．０°に現れる最大ピーク強度ＩＰに対する、３４．０°≦２θ≦３５．０°に現れる最大ピーク強度ＩＺＴと３５．５°≦２θ≦３７．０°に現れる最大ピーク強度ＩＺｎＯとの合計の割合（（ＩＺＴ＋ＩＺｎＯ）／ＩＰ×１００）が、０．３％以上となる圧電セラミックスとする。【選択図】図１
PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
To provide a piezoelectric ceramic capable of stably forming a piezoelectric element that is small in mechanical loss when driven with great amplitude at high speed.SOLUTION: A piezoelectric ceramic comprises, as a main component, a compound containing Pb, Zr, Ti, Zn, Nb, Mn and O as constituent elements and having a Perovskite-based structure, wherein, in X-ray diffraction measurements using Cu-K α-rays, a total ratio ((IZT+IZnO)/IP×100) of a maximum peak intensity IZT expressed at 34.0°≤2θ≤35.0° and a maximum peak intensity IZnO expressed at 35.5°≤2θ≤37.0° with respect to a maximum peak intensity IP expressed at 20.0°≤2θ≤40.0° is 0.3% or greater.SELECTED DRAWING: Figure 1
【課題】高速大振幅で駆動した場合の機械的損失が小さい圧電素子を、安定して得ることが可能な圧電セラミックスを提供する。【解決手段】構成元素としてＰｂ、Ｚｒ、Ｔｉ、Ｚｎ、Ｎｂ、Ｍｎ及びＯを含み、ペロブスカイト型構造を有する化合物を主成分とし、かつＣｕ－Ｋα線を用いたＸ線回折測定において、２０．０°≦２θ≦４０．０°に現れる最大ピーク強度ＩＰに対する、３４．０°≦２θ≦３５．０°に現れる最大ピーク強度ＩＺＴと３５．５°≦２θ≦３７．０°に現れる最大ピーク強度ＩＺｎＯとの合計の割合（（ＩＺＴ＋ＩＺｎＯ）／ＩＰ×１００）が、０．３％以上となる圧電セラミックスとする。【選択図】図１
PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
圧電セラミックス、圧電素子及び超音波振動子
HARADA TOMOHIRO (author) / AIZAWA TOMOYA (author)
2022-07-25
Patent
Electronic Resource
Japanese
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