公开(公告)号：US20180159019A1

公开(公告)日：2018-06-07

申请号：US15830646

申请日：2017-12-04

Applicant: TDK CORPORATION

Inventor： Masaru NANAO ,  Kouhei OHHASHI ,  Kenta ISHII

IPC: H01L41/08 ,  H01L41/047 ,  H01L41/113 ,  B41J2/14

CPC classification number: H01L41/0815 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2202/03 ,  G11B5/483 ,  G11B5/4873 ,  H01L41/0477 ,  H01L41/0973 ,  H01L41/1132 ,  H01L41/1873 ,  H01L41/22

Abstract: A piezoelectric thin film-stacked body is provided. A piezoelectric thin film-stacked body has a first electrode layer, a first intermediate layer stacked on the first electrode layer, a second intermediate layer stacked on the first intermediate layer, and a piezoelectric thin film stacked on the second intermediate layer, the first intermediate layer includes K, Na, and Nb, the second intermediate layer is a layer causing stress in a compression direction in the piezoelectric thin film, and the piezoelectric thin film includes (K,Na)NbO3.

公开(公告)号：US20160141486A1

公开(公告)日：2016-05-19

申请号：US14201515

申请日：2014-03-07

Applicant: TDK CORPORATION

Inventor： Taku MASAI ,  Masamitsu HAEMORI ,  Masahito FURUKAWA ,  Junichi YAMAZAKI ,  Kouhei OHHASHI

IPC: H01L41/187 ,  H01L41/08

CPC classification number: H01L41/1878 ,  C04B35/475 ,  H01L41/0805 ,  H01L41/316

Abstract: Provided is a piezoelectric composition containing a major component that is a perovskite-type oxide which is represented by the general formula ABO3, which contains no Pb, and which has A-sites containing Bi, Na, and K and B-sites containing Ti. The Ti is partly substituted with a transition metal element Me that is at least one selected from the group consisting of Mn, Cr, Fe, and Co. The content of Bi and the transition metal element Me in the perovskite-type oxide, which is the major component, is 6 mole percent to 43 mole percent in terms of Biu1MeO3.

Abstract translation: 本发明提供一种压电组合物，其含有主要成分为钙钛矿型氧化物，其由不含Pb的通式ABO3表示，具有含有Bi，Na，K的A位点和含有Ti的B位点。 Ti部分被选自Mn，Cr，Fe和Co中的至少一种的过渡金属元素Me所取代。钙钛矿型氧化物中Bi和过渡金属元素Me的含量为 主要组分按Biu1MeO3计为6摩尔％至43摩尔％。