公开(公告)号：US20160064646A1

公开(公告)日：2016-03-03

申请号：US14938166

申请日：2015-11-11

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinichiro Kawada ,  Shoichiro Suzuki ,  Hideki Ishii ,  Hiroyuki Hayashi ,  Suetake Omiya ,  Takashi Oyama

IPC: H01L41/187 ,  H01L41/273 ,  C04B35/626 ,  H01L41/083 ,  C04B35/495 ,  C04B35/64

CPC classification number: H01L41/1873 ,  C04B35/495 ,  C04B35/62605 ,  C04B35/62655 ,  C04B35/64 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3208 ,  C04B2235/3232 ,  C04B2235/3244 ,  C04B2235/3262 ,  C04B2235/3293 ,  C04B2235/6025 ,  C04B2235/768 ,  H01L41/083 ,  H01L41/273 ,  H03H9/02543 ,  H03H9/178

Abstract: A piezoelectric ceramic that contains an alkali niobate compound as its main ingredient. The alkali niobate compound has a perovskite crystal structure represented by AmBO3 and contains an alkali metal. There exists Sn in part of site A, and Zr in part of site B. A radial distribution function obtained from a K-edge X-ray absorption spectrum of Sn has a first peak intensity P1 at a first distance from a Sn atom and a second peak intensity P2 at a second distance from the Sn atom. The second distance is greater than the first distance, and the peak intensity ratio P1/P2 is 2.7 or less.

Abstract translation: 一种含有铌酸碱化合物作为主要成分的压电陶瓷。 碱铌酸酯化合物具有由AmBO 3表示的钙钛矿晶体结构，并含有碱金属。 在部分A中存在Sn，部分位置B存在Zr。从Sn的K边X射线吸收光谱获得的径向分布函数具有与Sn原子相距第一距离的第一峰强度P1和 与Sn原子相距第二距离的第二峰强度P2。 第二距离大于第一距离，峰值强度比P1 / P2为2.7以下。

公开(公告)号：US10014463B2

公开(公告)日：2018-07-03

申请号：US15016365

申请日：2016-02-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hideki Ishii ,  Shinichiro Kawada ,  Hiroyuki Hayashi ,  Tadashi Okuzawa ,  Shoichiro Suzuki

IPC: H01L41/187 ,  H01L41/43 ,  H01L41/047 ,  H01L41/273 ,  C04B35/495 ,  H01L41/277

CPC classification number: H01L41/1873 ,  C04B35/495 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3286 ,  C04B2235/6025 ,  C04B2235/768 ,  H01L41/0471 ,  H01L41/0477 ,  H01L41/273 ,  H01L41/277 ,  H01L41/43

Abstract: A multilayer sintered body having alternately stacked Ni-based inner electrodes and piezoelectric ceramic layers. The piezoelectric ceramic layers contain a main ingredient of a perovskite compound containing Nb, K, Na, and Li, at least one element M1 selected from Nd and Dy, and at least one element M2 selected from Ga and Al. The element M2 content is 0.071 parts by mole or less per 1 part by mole of the Nb in a solution obtained through a dissolution process. This multilayer piezoelectric ceramic electronic component is manufactured through the cofiring of conductive films as a precursor of the inner electrodes and ceramic green sheets as a precursor of the piezoelectric ceramic layers in a reducing atmosphere in which the oxidation of Ni is inhibited.

公开(公告)号：US10193054B2

公开(公告)日：2019-01-29

申请号：US14938166

申请日：2015-11-11

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinichiro Kawada ,  Shoichiro Suzuki ,  Hideki Ishii ,  Hiroyuki Hayashi ,  Suetake Omiya ,  Takashi Oyama

IPC: H01L41/187 ,  H01L41/273 ,  H03H9/02 ,  H03H9/17 ,  H01L41/083 ,  C04B35/495 ,  C04B35/626 ,  C04B35/64

Abstract: A piezoelectric ceramic that contains an alkali niobate compound as its main ingredient. The alkali niobate compound has a perovskite crystal structure represented by AmBO3 and contains an alkali metal. There exists Sn in part of site A, and Zr in part of site B. A radial distribution function obtained from a K-edge X-ray absorption spectrum of Sn has a first peak intensity P1 at a first distance from a Sn atom and a second peak intensity P2 at a second distance from the Sn atom. The second distance is greater than the first distance, and the peak intensity ratio P1/P2 is 2.7 or less.