Composite multilayer magnetic material and its production process

摘要

PCT No. PCT/FR90/00855 Sec. 371 Date May 28, 1992 Sec. 102(e) Date May 28, 1992 PCT Filed Nov. 27, 1990 PCT Pub. No. WO91/08577 PCT Pub. Date Jun. 13, 1991.The invention relates to a composite, multilayer magnetic material incorporating at least one thin polymer support film, which is mechanically and thermally strong, coated on at least one of its faces with a thin deposit of an amorphous ferromagnetic compound having a magnetic permeability higher than 30, in which the density d and the permeability of the magnetic material are such that 5