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.

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。