Title:
POLYCRYSTALLINE BISCO3-PBTIO3 PIEZOELECTRIC MATERIAL INCLUDING BATIO3 SEED LAYER, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2022/131841
Kind Code:
A1
Abstract:
The present invention relates to a piezoelectric material having improved piezoelectric properties. In order to manufacture the piezoelectric material having improved piezoelectric properties according to the present invention, the crystal orientation of polycrystalline BiScO3-PbTiO3 using a BaTiO3 seed layer is controlled. According to the present invention, a polycrystalline piezoelectric material having a domain alignment structure similar to that of a single crystal is provided by aligning crystal grains of the polycrystalline piezoelectric material in a single direction, thus providing a piezoelectric material having similar piezoelectric properties to a single crystal piezoelectric ceramic, and having mechanical properties characterized by strength significantly greater than that of a single crystal.
Inventors:
JEONG YOUNG HUN (KR)
LEE MIN SEON (KR)
LEE MIN SEON (KR)
Application Number:
PCT/KR2021/019257
Publication Date:
June 23, 2022
Filing Date:
December 17, 2021
Export Citation:
Assignee:
KOREA INST CERAMIC ENG & TECH (KR)
International Classes:
C04B35/472; C04B35/50; C04B35/622; H01L41/187
Foreign References:
| JP2019108260A | 2019-07-04 | |||
| KR101981649B1 | 2019-05-23 | |||
| KR100981304B1 | 2010-09-10 | |||
| KR20190049016A | 2019-05-09 | |||
| KR20170026586A | 2017-03-08 | |||
| KR102308852B1 | 2021-10-01 |
Attorney, Agent or Firm:
NAM, Gun Pil et al. (KR)
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