公开(公告)号：US20180179078A1

公开(公告)日：2018-06-28

申请号：US15856662

申请日：2017-12-28

Applicant: TDK CORPORATION ,  TDK XIAMEN CO., LTD.

Inventor： Guibin GE ,  RuiLun ZHANG ,  Fan ZHANG ,  Jintao HUANG ,  Kazuya MUTO ,  Daisuke OHTSU ,  Kakeru WATANABE

IPC: C01G23/00 ,  C01G29/00 ,  C04B35/468 ,  C04B35/47 ,  C04B35/475 ,  H01G4/12 ,  H01G4/33 ,  H01B3/12

CPC classification number: C01G23/006 ,  C01G29/006 ,  C01P2002/34 ,  C04B35/465 ,  C04B35/4682 ,  C04B35/47 ,  C04B35/475 ,  C04B35/62685 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3232 ,  C04B2235/3234 ,  C04B2235/3236 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3277 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/442 ,  C04B2235/768 ,  H01B3/12 ,  H01G4/10 ,  H01G4/1227 ,  H01G4/33

Abstract: The present invention relates to the dielectric composition including barium titanate, strontium titanate, titanium oxide and bismuth oxide. In case when the content of barium titanate, converted to BaTiO3, is a mol %, the content of strontium titanate, converted to SrTiO3, is b mol %, the content of titanium oxide and bismuth oxide, converted to Bi2Ti3O9, is c mol %, and a+b+c=100, a, b and c are values within a scope surrounded by the following four points, i.e. point A, point B, point C and point D in a three-dimensional phase diagram. Point A: (a, b, c)=(52.1, 40.0, 7.9); point B: (a, b, c)=(86.5, 5.6, 7.9); point C: (a, b, c)=(91.0, 5.6, 3.4); point D: (a, b, c)=(56.6, 40.0, 3.4).