Invention Grant
- Patent Title: Piezoelectric ceramic and piezoelectric element using the same
- Patent Title (中): 压电陶瓷和压电元件使用相同
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Application No.: US12933404Application Date: 2009-03-18
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Publication No.: US08643255B2Publication Date: 2014-02-04
- Inventor: Shyuuichi Fukuoka
- Applicant: Shyuuichi Fukuoka
- Applicant Address: JP Kyoto
- Assignee: Kyocera Corporation
- Current Assignee: Kyocera Corporation
- Current Assignee Address: JP Kyoto
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2008-069012 20080318; JP2008-191768 20080725
- International Application: PCT/JP2009/055353 WO 20090318
- International Announcement: WO2009/122916 WO 20091008
- Main IPC: H01L41/187
- IPC: H01L41/187
Abstract:
Disclosed is a piezoelectric ceramic indicated by the composition formula Bi4Ti3O12.α[(1−β)(M11-γLnγ)TiO3+βM2M3O3], wherein: α, β, and γ satisfy 0.3≦α≦0.95, 0β≦0.5, and 0≦γ≦0.5; M1 is at least one chosen from Sr, Ba, Ca, (Bi0.5Na0.5), (Bi0.55K0.5) and (Bi0.5Li0.5); M2 is at least one chosen from among Bi, Na, K and Li; M3 is at least one chosen from Fe and Nb; and includes 0.01-0.7 mass % of Co in CoO conversion to 100 mass % of bismuth layered compound where Ln is lanthanoid.
Public/Granted literature
- US20110133608A1 PIEZOELECTRIC CERAMIC AND PIEZOELECTRIC ELEMENT USING THE SAME Public/Granted day:2011-06-09
Information query
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