J. Phys. IV France
Volume 08, Numéro PR2, June 1998
Soft Magnetic Materials 13
Page(s) Pr2-437 - Pr2-440
Soft Magnetic Materials 13

J. Phys. IV France 08 (1998) Pr2-437-Pr2-440

DOI: 10.1051/jp4:19982102

Advances in the development and production of highest permeability ferrite materials

R. Lucke

Siemens Matsushita Components GmbH & Co KG, S+M FER VE, P.O. Box 801709, 81617 Munich, Germany

The tendency to miniaturized inductive components is combined with low winding numbers and consequently with high initial permeabilities. In order to extend our present material program (µi = 5000 - 15000), a new material with an initial permeability of μi ≥ 20000 was developed. The level of initial permeability strongly depends on the anisotropy of the ferrite material. It can be controlled by the chemical composition and the production process, e. g. the powder preparation and the sintering conditions. For a commercialized production of ferrite cores with μi ≥ it is necessary to use available processing equipment to stay cost-effective.

© EDP Sciences 1998