Title:
液体噴射ヘッド、液体噴射装置、圧電素子、超音波デバイス及びＩＲセンサー
Document Type and Number:
Japanese Patent JP5773129
Kind Code:
B2
Abstract:
A piezoelectric device comprises a first electrode, a piezoelectric layer provided above the first electrode, and a second electrode provided above the piezoelectric layer. The piezoelectric layer comprises a mixed crystal containing at least bismuth ferrate and barium titanate. The piezoelectric layer comprises a first piezoelectric layer and a second piezoelectric layer which is disposed between at least one of the first and second electrodes and the first piezoelectric layer. The barium titanate content of the second piezoelectric layer is at least 10 mole percent higher than the barium titanate content of the first piezoelectric layer.
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Inventors:
Tetsuya Isshiki
Application Number:
JP2011025460A
Publication Date:
September 02, 2015
Filing Date:
February 08, 2011
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H01L41/09; B41J2/045; B41J2/055; B41J2/135; B41J2/14; H01L41/18; H01L41/187; H01L41/22; H01L41/39
Domestic Patent References:
| JP2009252790A | ||||
| JP2008028285A | ||||
| JP2006032628A |
Other References:
Serhiy O. LEONTSEV(他1名),Dielectric and Piezoelectric Properties in Mn-Modified (1-x)BiFeO3-xBaTiO3 Ceramics,Journal of the American Ceramic Society,米国,The American Ceramic Society,2009年12月,Volume 92, Issue 12,p.2957-2961
Attorney, Agent or Firm:
Hiroyuki Kurihara