Piezoelectric element and method for manufacturing the same

Details Piezoelectric element and method for manufacturing the same Piezoelectric element and method for manufacturing the same

2005-03-08

2005-03-08

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S365000, C310S357000, C310S320000, C029S025350, C252S06290R

Reexamination Certificate

active

06864621

ABSTRACT:
A laminate type piezoelectric element having an improved piezoelectric property is provided. Vibration electrodes are arranged in a piezoelectric body, and high-order vibration of the thickness vibration is excited. The piezoelectric ceramic includes two ceramic piezoelectric layers which are laminated, and are integrally formed. Each of the ceramic piezoelectric layers contains ceramic crystal grains having shape anisotropy and spontaneous polarization preferentially oriented in one plane. The in-plane direction of this plane is perpendicular to the principal surfaces of the ceramic piezoelectric layers. The ceramic piezoelectric layers are polarized in the same thickness direction.

REFERENCES:
patent: 5914068 (1999-06-01), Hiratani et al.
patent: 6299815 (2001-10-01), Kimura et al.
patent: 6692652 (2004-02-01), Takao et al.
patent: 6734606 (2004-05-01), Kimura et al.
patent: 6753642 (2004-06-01), Ogawa et al.
patent: 6767503 (2004-07-01), Ogawa et al.
patent: 20020005683 (2002-01-01), Kimura et al.
patent: 20030071240 (2003-04-01), Kimura et al.
patent: 20030085636 (2003-05-01), Ando et al.
patent: 20030213426 (2003-11-01), Natori et al.
patent: 2003026473 (2003-01-01), None
Grain-Oriented and Mn-Doped (NaBi)(1−xγ2CaxBl4Ti4O15Ceramics for Piezo- and Pyrosensor Materials; Tadashi Takenaka and Koichiro Sakata—Sensors and Materials, 1 (1988) 035-046.
Melt-textured Growth of Polycrystalline; S. Jin, etc.—Physical Review B, vol. 37, No. 13.
Dielectric and Electromechanical Properties of Textured Niobium-Doped Bismuth Titanate Ceramics; Seong-Hyeon Hong, etc.—Journal Am. Ceram.Soc. 83 [1] 113-118 (2000).

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