- 专利标题: METHOD FOR EVALUATING PIEZOELECTRIC FILM, PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS
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申请号: US15812816申请日: 2017-11-14
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公开(公告)号: US20180145246A1公开(公告)日: 2018-05-24
- 发明人: Masayuki OMOTO , Toshiki HARA , Ichiro ASAOKA
- 申请人: SEIKO EPSON CORPORATION
- 优先权: JP2016-226672 20161122
- 主分类号: H01L41/187
- IPC分类号: H01L41/187 ; B41J2/14 ; G01N23/06
摘要:
A method for evaluating a piezoelectric film containing a perovskite oxide containing a lead atom, a zirconium atom, and a titanium atom, and the method includes a process of irradiating the piezoelectric film with X-rays to acquire an extended X-ray absorption fine structure (EXAFS) spectrum at the L3 absorption edge of the lead atom, a process of Fourier-transforming the extended X-ray absorption fine structure (EXAFS) spectrum to acquire a radial distribution function, and a process of acquiring the intensity of a first peak having a distance from the lead atom of 1.4±0.2 Å, the intensity of a second peak having a distance from the lead atom of 2.0±0.2 Å, and the intensity of a third peak having a distance from the lead atom of 2.6±0.2 Å from the radial distribution function, and then evaluating the film quality of the piezoelectric film from a value obtained by dividing the intensity of the first peak by the intensity of the second peak and a value obtained by dividing the intensity of the first peak by the intensity of the third peak.
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