公开(公告)号：US20190035523A1

公开(公告)日：2019-01-31

申请号：US16077496

申请日：2017-02-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Xiaoming Kou ,  Michael S. Graff ,  Jeffrey M. Florczak ,  Steven L. Johnson ,  Rui Yang ,  Carlos A. Barrios ,  Steven D. Theiss ,  Kevin W. Gotrik

IPC: H01F1/147 ,  H01F3/02

Abstract: A multilayer magnetic sheet is described which comprises a plurality of stacked magnetic component layers separated by first electrically insulating layers. Each of the plurality of magnetic component layers comprises a plurality of isolated magnetic sublayers having a magnetic layer thickness of less than one micron. The multilayer magnetic sheet has a magnetic fraction between about 5% and about 80%; a total magnetic thickness of greater than or equal to 5 microns; and a relative composite permeability of greater than about 20.

公开(公告)号：US10658096B2

公开(公告)日：2020-05-19

申请号：US16077496

申请日：2017-02-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Xiaoming Kou ,  Michael S. Graff ,  Jeffrey M. Florczak ,  Steven L. Johnson ,  Rui Yang ,  Carlos A. Barrios ,  Steven D. Theiss ,  Kevin W. Gotrik

IPC: B32B7/025 ,  H01F1/147 ,  B32B9/04 ,  B32B15/08 ,  B32B7/02 ,  B32B27/28 ,  B32B27/32 ,  B32B27/36 ,  B32B7/12 ,  B32B27/08 ,  H01F3/02

Abstract: A multilayer magnetic sheet is described which comprises a plurality of stacked magnetic component layers separated by first electrically insulating layers. Each of the plurality of magnetic component layers comprises a plurality of isolated magnetic sublayers having a magnetic layer thickness of less than one micron. The multilayer magnetic sheet has a magnetic fraction between about 5% and about 80%; a total magnetic thickness of greater than or equal to 5 microns; and a relative composite permeability of greater than about 20.