Patent ID: 7470498
Filing Date: 2008-12-30
Classification: G03G,H01F

Abstract:
1. A Mg-based ferrite material consisting essentially of MgO and Fe 2 O 3 components or of CaO, MgO and Fe 2 O 3 components, and having a composition of formula (1) wherein a, b, and c satisfy wherein R(Ca) is expressed as (Fw(A): formula weight of A); and d is determined by oxidation numbers of Ca, Mg and Fe; wherein said Mg-based ferrite material has a saturation magnetization measured at 14 kOe using an vibrating sample magnetometer, in the range of 30-80 emu/g, wherein said Mg-based ferrite material has a dielectric breakdown voltage in the range of 1.0-5.0 kV.