Patent ID: 7524433
Filing Date: 2009-04-28
Classification: C01G,C01P,C04B,H01F

Abstract:
1. A ferrite material formed of a sintered body comprising, as main constituents, Fe 2 O 3 : 47.0 to 50.0 mol %, CuO: 1 to 5 mol %, NiO: 20 to 26 mol %, and ZnO substantially constituting the balance and its upper limit being less than 25.4 mol %, wherein said sintered body comprises: 40 ppm or less of P in terms of P 50 to 1500 ppm of one or more additives of Al the initial permeability μi (at 100 kHz) is 320 or more; the absolute value of aμir the absolute value of aμir the saturation magnetic flux density Bs (applied magnetic field: 4000 Nm) is 470 mT or more, where