公开(公告)号：EP2040272A1

公开(公告)日：2009-03-25

申请号：EP07768249.0

申请日：2007-07-05

申请人： Hitachi Metals, Ltd.

发明人： KATAYAMA, Yasuhisa ,  UMENO, Tohru ,  TACHIBANA, Takeshi

IPC分类号： H01F17/00

CPC分类号： H01F17/0013 ,  B32B18/00 ,  C04B35/265 ,  C04B2235/3208 ,  C04B2235/3232 ,  C04B2235/3239 ,  C04B2235/3251 ,  C04B2235/3274 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6025 ,  C04B2235/72 ,  C04B2237/34 ,  C04B2237/341 ,  C04B2237/343 ,  C04B2237/348 ,  C04B2237/704 ,  H01F3/14 ,  H01F41/046

摘要： A laminated device comprising pluralities of magnetic ferrite layers, conductor patterns each formed on each magnetic ferrite layer and connected in a lamination direction to form a coil, and a non-magnetic ceramic layer formed on at least one magnetic ferrite layer such that it overlaps the conductor patterns in a lamination direction, the non-magnetic ceramic layer comprising as main components non-magnetic ceramics having higher sintering temperatures than that of the magnetic ferrite, and further one or more of Cu, Zn and Bi in the form of an oxide.