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MAGNETOPLUMBITE-TYPE HEXAGONAL FERRITE POWDER, RADIO WAVE ABSORBER, AND METHOD OF CONTROLLING RESONANCE FREQUENCY OF MAGNETOPLUMBITE-TYPE HEXAGONAL FERRITE POWDER
MAGNETOPLUMBITE-TYPE HEXAGONAL FERRITE POWDER, RADIO WAVE ABSORBER, AND METHOD OF CONTROLLING RESONANCE FREQUENCY OF MAGNETOPLUMBITE-TYPE HEXAGONAL FERRITE POWDER
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机译:磁渗透型六边形铁氧体粉末,无线电波吸收器和控制磁电阻型六边形铁氧体粉末的共振频率的方法
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摘要
A magnetoplumbite-type hexagonal ferrite powder containing a powder of a magnetoplumbite-type hexagonal ferrite represented by Formula (1) and a powder of a compound represented by Formula (2), in which a magnetic field strength Hα, which corresponds to 90% of a magnetization quantity obtained in a case where an external magnetic field of 50 kOe is applied, satisfies 19 kOe≤Hα≤28 kOe, a radio wave absorber, and a method of controlling resonance frequency of a magnetoplumbite-type hexagonal ferrite powder are provided. In Formula (1), A represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.5≤x≤8.0. In Formula (2), Aa represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb.; AFe(12-x)AlxO19 Formula (1); AaAl2O4 Formula (2)
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