公开(公告)号：EP2619156A2

公开(公告)日：2013-07-31

申请号：EP11827568.4

申请日：2011-09-22

申请人： Skyworks Solutions, Inc.

发明人： ANDERSON, Kelvin, M. ,  HILL, Michael, D. ,  CRUICKSHANK, David, Bowie

IPC分类号： C04B35/30 ,  C04B35/32 ,  C04B35/36 ,  C04B35/01 ,  C04B35/26

CPC分类号： H01F1/344 ,  C01G49/0018 ,  C01G49/0063 ,  C01G53/006 ,  C01G53/40 ,  C01P2002/32 ,  C01P2002/54 ,  C01P2006/32 ,  C01P2006/40 ,  C04B35/265 ,  C04B2235/3262 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/6585 ,  C04B2235/763 ,  C04B2235/81

摘要： Embodiments disclosed herein relate to using cobalt (Co) to fine tune the magnetic properties, such as permeability and magnetic loss, of nickel-zinc ferrites to improve the material performance in electronic applications. The method comprises replacing nickel (Ni) with sufficient Co
+2 such that the relaxation peak associated with the Co
+2 substitution and the relaxation peak associated with the nickel to zinc (Ni/Zn) ratio are into near coincidence. When the relaxation peaks overlap, the material permeability can be substantially maximized and magnetic loss substantially minimized. The resulting materials are useful and provide superior performance particularly for devices operating at the 13.56 MHz ISM band.