The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2025
Filed:
Oct. 21, 2020
Xi'an Jiaotong University, Shaanxi, CN;
National Institute for Materials Science, Tsukuba, JP;
Xiaobing Ren, Shaanxi, CN;
Shuai Ren, Shaanxi, CN;
Yanshuang Hao, Shaanxi, CN;
Minxia Fang, Shaanxi, CN;
Xi'an Jiaotong University, Xi'an, CN;
National Institute for Materials Science, Tsukuba, JP;
Abstract
The present disclosure relates to a method for obtaining lead-free piezoelectric materials, including: Step S, adjusting the T/O phase boundary of a first lead-free piezoelectric material: for the first lead-free piezoelectric material, adjusting the T/O phase boundary between the tetragonal phase T and the orthorhombic phase O to be near the room temperature by doping; Step S, further adjusting the C/T phase boundary and the O/R phase boundary: further adjusting the C/T phase boundary between the cubic paraelectric phase C and the tetragonal phase T, and the O/R phase boundary between the orthorhombic phase O and the rhombohedral phase R by doping, so as to enable the C/T phase boundary and the O/R phase boundary to approach the T/O phase boundary; and Step S, obtaining second lead-free piezoelectric materials: obtaining multiple second lead-free piezoelectric materials with different piezoelectric constants dand different Curie temperatures Tin the process.