公开(公告)号：US20150249201A1

公开(公告)日：2015-09-03

申请号：US14633649

申请日：2015-02-27

Applicant: TDK CORPORATION

Inventor： Masahito FURUKAWA ,  Yoshikazu SHIMURA ,  Taku MASAI ,  Satoshi WADA

IPC: H01L41/18 ,  H01L41/083 ,  H01L41/187

CPC classification number: H01L41/1873 ,  H01L41/083 ,  H01L41/1871

Abstract: A composite piezoelectric ceramic includes a compact of crystal particles including at least one of potassium niobate (KNbO3) and sodium niobate (NaNbO3) and optionally further including lithium niobate (LiNbO3), and a layer containing barium titanate (BaTiO3) that is disposed on the surface of the compact while forming a heterojunction with the compact. A piezoelectric device includes the composite piezoelectric ceramic.

Abstract translation: 复合压电陶瓷包括包含铌酸钾（KNbO 3）和铌酸钠（NaNbO 3）中的至少一种并且任选地还包含铌酸锂（LiNbO 3）和含有钛酸钡（BaTiO 3）的层中的至少一种的晶体颗粒， 同时与压实体形成异质结。 压电装置包括复合压电陶瓷。

公开(公告)号：US20190279818A1

公开(公告)日：2019-09-12

申请号：US16295590

申请日：2019-03-07

Applicant: TDK CORPORATION

Inventor： Shirou OOTSUKI ,  Masahito FURUKAWA ,  Satoshi WADA ,  Shintaro UENO ,  Yuya HATTORI

IPC: H01G4/12 ,  H01G4/30 ,  B28B11/24 ,  C23C14/18 ,  C04B35/01 ,  C04B35/117 ,  C04B35/495 ,  C04B35/47 ,  C04B35/468 ,  C04B35/457 ,  C04B35/475 ,  C04B35/634 ,  C04B35/638 ,  C04B35/64

Abstract: A composite structure including a conductor region that is configured from a first oxide, and an insulator region that is configured from a second oxide and that surrounds the conductor region, wherein the first oxide and the second oxide are in hetero structure with each other. A powder and a fired body each having such a composite structure are also preferable.