| 添加BaFe12O19及磁织构化处理对尖晶石型铁氧体基吸波材料特性的影响 |
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| 引用本文： | 娄明连,阚涛.添加BaFe12O19及磁织构化处理对尖晶石型铁氧体基吸波材料特性的影响[J].磁性材料及器件,1999(1). |
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| 作者姓名： | 娄明连 阚涛 |
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| 作者单位： | 安徽大学物理系,合肥,230039 |
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| 摘 要： | 在用铁砂制备的铁氧体基复合电波吸收材料中添加一定量的单轴各向异性磁铅石铁氧体单畴微粉，通过磁织构化处理，使高度弥散在基础材料中的磁铅石铁氧体易磁化轴有序排列。结果使铁氧体吸波材料的特性发生明显的变化：吸收量Ａ从１７ｄＢ提高到３１ｄＢ；第二吸收峰位置从９．７５ＧＨｚ移至高频１０．４ＧＨｚ；１０ｄＢ带宽从１．９ＧＨｚ增至２．３５ＧＨｚ；匹配厚度从１．１ｍｍ增至１．７ｍｍ；对应１０ｄＢ吸收量允许涂层厚度变化Δｈ＝１．２ｍｍ等。对作用机理进行了初步探讨。
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| 关 键 词： | 铁氧体 吸波材料 磁织构处理 |
The Effects of BaFe12O19-doping and Magnetic Tuxture Treatment on the Properties of Spinel Ferrite-based EM Wave Absorption Materials |
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| Lou Minglian,Kan Tao.The Effects of BaFe12O19-doping and Magnetic Tuxture Treatment on the Properties of Spinel Ferrite-based EM Wave Absorption Materials[J].Journal of Magnetic Materials and Devices,1999(1). |
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| Authors: | Lou Minglian Kan Tao |
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| Abstract: | By doping an amount of uniaxially anisotropic single domain magnetoplumbite ferrite particles to spinel ferrite based composite wave absorption materials made from iron sand and magnetic texture treating,the easy axes of the magnetoplumbite ferrite particles which highly disperse in base materials keep magnetic ordering.As a result,the absorption A increases from 17 to 31 dB;the second absorption peak shifts from 9.75 to 10.4GHz;10dB bandwidth increases from 1.9 to 2.35GHz;matching thickness increases from 1.1 to 1.7mm;10dB thickness change is 1.2mm.A preliminary discussion for mechanism is given. |
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| Keywords: | ferrite EM wave absorption material magnetic texture treatment |
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