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Title:
PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ULTRASONIC VIBRATOR
Document Type and Number:
WIPO Patent Application WO/2022/153680
Kind Code:
A1
Abstract:
A piezoelectric ceramic according to one aspect of the present invention 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.

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Inventors:
HARADA TOMOHIRO (JP)
AIZAWA TOMOYA (JP)
Application Number:
PCT/JP2021/043157
Publication Date:
July 21, 2022
Filing Date:
November 25, 2021
Export Citation:
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Assignee:
TAIYO YUDEN KK (JP)
International Classes:
C04B35/491; H01L41/047; H01L41/083; H01L41/09; H01L41/187; H01L41/339
Foreign References:
JP2001253773A2001-09-18
JP2006193415A2006-07-27
JP2007067152A2007-03-15
JP2017183542A2017-10-05
Attorney, Agent or Firm:
AIDA Satoru (JP)
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