Powder mixture of magnetoplumbite-type hexagonal ferrite, method for producing the same, and radio wave absorber
AssigneeFUJIFILM Corporation
InventorHirokazu Hashimoto
Life of this patent
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Abstract
A powder mixture of a magnetoplumbite-type hexagonal ferrite is a mixture of powders of two or more kinds of compounds represented by Formula (1), the two or more kinds of compounds represented by Formula (1) are two or more kinds of compounds having different values of x in Formula (1), and are a powder mixture satisfying a relationship of xmax−xmin≤0.2, in a case where a maximum value of x is defined as xmax and a minimum value of x is defined as xmin, in two or more kinds of compounds having different values of x in Formula (1), and the application. 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. AFe(12-x)AlxO19 Formula (1)
Claims8
A powder mixture of a magnetoplumbite-type hexagonal ferrite,
- wherein the powder mixture is a mixture of powders of two or more kinds of compounds represented by Formula (1),
- wherein each of the powders of the two or more kinds of compounds represented by Formula (1) is a single crystal powder,
- wherein the two or more kinds of compounds represented by Formula (1) are two or more kinds of compounds having different values of x in Formula (1), and
- wherein in the two or more kinds of compounds having different values of x in Formula (1), in a case where a maximum value of x is defined as Xmax and a minimum value of x is defined as Xmin, a relationship of Xmax−Xmin≤0.2 is satisfied,
- AFe(12-x)AlxO19 Formula (1)
- wherein 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.
Dependencies are inferred from the claim text.