Invention Grant
- Patent Title: Piezo-electric ceramic composition, method for producing the composition, and electric component comprising the composition
- Patent Title (中): 压电陶瓷组合物，组合物的制造方法以及包含该组合物的电子部件
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Application No.: US13388284Application Date: 2010-07-29
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Publication No.: US09150457B2Publication Date: 2015-10-06
- Inventor: Christian Hoffmann , Alain Brice Kounga Njiwa , Yongli Wang
- Applicant: Christian Hoffmann , Alain Brice Kounga Njiwa , Yongli Wang
- Applicant Address: DE Munich
- Assignee: EPCOS AG
- Current Assignee: EPCOS AG
- Current Assignee Address: DE Munich
- Agency: Cozen O'Connor
- Priority: DE102009035425 20090731
- International Application: PCT/EP2010/061053 WO 20100729
- International Announcement: WO2011/012682 WO 20110203
- Main IPC: C04B35/468
- IPC: C04B35/468 ; C04B35/475 ; H01L41/187
Abstract:
A piezoelectric ceramic composition comprising: a matrix material comprising at least two matrix components having a perovskite structure or consisting of said matrix components; a first matrix component being selected from (Bi0.5A0.5)EO3 and BaEO3; and a further matrix component being Bi(Me0.5E0.5)O3, wherein A is selected from an alkali metal, particularly sodium or potassium, or a mixture of alkali metals; wherein E is independently selected from titanium, zirconium and mixtures of titanium and zirconium; and wherein Me is selected from bivalent metals.
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