公开(公告)号：US11508503B2

公开(公告)日：2022-11-22

申请号：US16378676

申请日：2019-04-09

Applicant: ROGERS CORPORATION

Inventor： Yajie Chen ,  Kevin Ring ,  Li Zhang ,  Michael S. White

IPC: H01F1/34 ,  C04B35/26 ,  G11B5/706 ,  H05K9/00 ,  H01F1/10

Abstract: A grain-oriented M-type hexagonal ferrite has the formula MeFe12O19, and a dopant effective to provide planar magnetic anisotropy and magnetization in a c-plane, or a cone anisotropy, in the hexagonal crystallographic structure wherein Me is Sr+, Ba2+ or Pb2+, and wherein greater than 30%, preferably greater than 80%, of c-axes of the ferrite grains are aligned perpendicular to the c-plane.