Invention Grant
- Patent Title: Lead-free piezoceramic materials
- Patent Title (中): 无铅压电陶瓷材料
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Application No.: US12393274Application Date: 2009-02-26
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Publication No.: US08179025B1Publication Date: 2012-05-15
- Inventor: Ichiro Takeuchi , Fujino Shigehiro , Makoto Murakami , Sung Hwan Lim , Daisuke Kan
- Applicant: Ichiro Takeuchi , Fujino Shigehiro , Makoto Murakami , Sung Hwan Lim , Daisuke Kan
- Applicant Address: US MD College Park
- Assignee: University of Maryland College Park
- Current Assignee: University of Maryland College Park
- Current Assignee Address: US MD College Park
- Agency: The Auerbach Law Firm, LLC
- Agent William C. Schrot; Jeffrey I. Auerbach
- Main IPC: H01L41/187
- IPC: H01L41/187
Abstract:
The present invention relates to lead-free piezoelectric ceramic materials comprising crystalline (and preferably perovskite crystalline) structures of the formula Bi1-x(RE)xFeO3, where RE is one or more of La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and 0≦x≦0.3. The materials are at or near the morphotropic phase boundary and display enhanced piezoelectric and dielectric properties.
Public/Granted literature
- US20120119623A1 LEAD-FREE PIEZOCERAMIC MATERIALS Public/Granted day:2012-05-17
Information query
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