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    • 8. 发明授权
    • Mn-Zn ferrite
    • Mn-Zn铁氧体
    • US06210598B1
    • 2001-04-03
    • US09374760
    • 1999-08-16
    • Osamu KobayashiKoji HondaShunji Kawasaki
    • Osamu KobayashiKoji HondaShunji Kawasaki
    • C01G4700
    • H01F1/344C04B35/2658
    • A Mn—Zn ferrite having large electrical resistance, which can withstand use in high frequency region exceeding 1 MHz, is provided. The Mn—Zn ferrite comprises the following basic components: 44.0 to 50.0 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, 0.1 to 8.0 mol % at least one member selected from the group consisting of TiO2 and SnO2, and the remainder being MnO. By the addition of TiO2 and SnO2, even if the material is sintered in air, electrical resistance of 103 times that of the conventional Mn—Zn ferrite can be obtained, and high initial permeability of 300 to 400 as estimated can be secured even at high frequency of 5 MHz.
    • 提供了具有大电阻的Mn-Zn铁氧体,其能够经受在超过1MHz的高频区域中的使用。 Mn-Zn铁氧体包含以下基本成分:44.0〜50.0mol%Fe 2 O 3,4.0〜26.5mol%ZnO,0.1〜8.0mol%选自TiO 2和SnO 2中的至少一种,余量为MnO。 通过添加TiO 2和SnO 2,即使在空气中烧结材料,也可以获得与传统的Mn-Zn铁氧体相当的103倍的电阻,即使在高的情况下也可以确保高达300〜400的初始磁导率 频率为5 MHz。