It is low loss MnZn software ferrite

摘要

PURPOSE: To lessen the loss in high magnetic field by a method wherein a fixed quantity of one or two or more kinds selected from SiO₂, CaO niobium oxide, titanium oxide, and oxides of potassium, rubidium and cesium, is contained in the fundamental component consisting of Fe₂O₃, MnO and ZnO. ;CONSTITUTION: SiO₂ of 0.005 to 0.040wt.% CaO of 0.02 to 0.20wt.%, niobium oxide of 0.01 to 0.08wt.%, titanium oxide of 0.05 to 0.40wt.% and one or two or more kinds seledted from oxides of potasium, rubidium and cesium of 100 to 200ppm in terms of metal are contained in the fundamental component consisting of Fe₂O₃ of 52 to 54.5mol% MnO of 33 to 40mol% and ZnO of 6 to 14mol%. As a result, power loss is small and the iron loss to the temperature limits of 80 to 120°C or thereabout, from room temperature to the working temperature or higher has the negative temperature dependency. Also, a low loss Mn-Zn soft ferrite, having low loss in high magnetic field, can be obtained.;COPYRIGHT: (C)1995,JPO