| 摘要 |
PURPOSE:To obtain a magnetic material having extremely improved power loss even at high frequency and under high load by blending Fe2O3, MnO and ZnO as main components with P, SiO2 and CaO as subsidiary components. CONSTITUTION:A magnetic material of oxide simultaneously containing 52-56mol% Fe2O3, 32-42mol% MnO and 5-15mol% ZnO as main components and 10-70ppm P, 100-300ppm SiO2 and 200-2,000ppm CaO as subsidiary components. The magnetic material is obtained by blending each component in an oxide state or in a form to produce an oxide and burning. Power loss of the magnetic material can be extremely reduced and sufficiently low-loss characteristics can be attained even in a frequency range of about 130KHz. When the magnetic material is used for core of potential device, heat generation is followed during operation and this low-loss ferrite can be set to minimize power loss in a temperature range of about 60-100 deg.C. Consequently, power loss in operation can be reduced. |
