A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PIEZOELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS
Provided is a piezoelectric ceramics including crystal grains each including: a first region that is formed of a perovskite-type metal oxide having a crystal structure in which a central element of a unit cell is located at an asymmetrical position; and a second region that is formed of a perovskite-type metal oxide having a crystal structure in which a central element of a unit cell is located at a symmetrical position, and that is present inside the first region, wherein a ratio of a cross-sectional area of the second region to a cross-sectional area of the piezoelectric ceramics is 0.1% or less.
PIEZOELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS
Provided is a piezoelectric ceramics including crystal grains each including: a first region that is formed of a perovskite-type metal oxide having a crystal structure in which a central element of a unit cell is located at an asymmetrical position; and a second region that is formed of a perovskite-type metal oxide having a crystal structure in which a central element of a unit cell is located at a symmetrical position, and that is present inside the first region, wherein a ratio of a cross-sectional area of the second region to a cross-sectional area of the piezoelectric ceramics is 0.1% or less.
PIEZOELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS
UEBAYASHI AKIRA (author) / OSHIMA KANAKO (author) / KUBOTA MAKOTO (author) / FURUTA TATSUO (author) / SHIMIZU YASUSHI (author) / SHIMADA MIKIO (author) / ARII CHIAKI (author)
2019-12-12
Patent
Electronic Resource
English
Piezoelectric ceramics, piezoelectric element, and electronic apparatus
| European Patent Office | 2023
PIEZOELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS
| European Patent Office | 2021
| European Patent Office | 2017
PIEZOELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT AND ELECTRONIC DEVICE
| European Patent Office | 2019
| European Patent Office | 2022