| ZnO-羰基铁复合纳米粒子的吸波特性 |
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| 引用本文： | 周长,方庆清,闫方亮,刘艳美,吕庆荣,吴克跃,张启平,张翰铭. ZnO-羰基铁复合纳米粒子的吸波特性[J]. 磁性材料及器件, 2010, 41(5) |
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| 作者姓名： | 周长 方庆清 闫方亮 刘艳美 吕庆荣 吴克跃 张启平 张翰铭 |
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| 作者单位： | 安徽大学,物理与材料科学学院,安徽合肥,230036 |
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| 基金项目： | 安徽省自然科学基金资助项目(090414177) |
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| 摘 要： | 采用高能球磨法制备了氧化锌-羰基铁复合体吸波剂,研究了材料在0~20GHz频率下的吸波特性。实验表明,随着球磨时间的延长,吸波剂颗粒尺寸减小,吸收峰强度增高。通过对比不同样品的吸波特性发现,氧化锌作为介电材料包覆在羰基铁颗粒上,使得吸收谱向低频方向扩展,吸波效果明显增强。所制备的球磨30h的氧化锌-羰基铁3mm厚样品的-5dB带宽达到10.8GHz,-8dB带宽达到5.1GHz,最大吸收峰为-30dB。
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| 关 键 词： | 羰基铁 氧化锌 吸波材料 磁损耗 电极化损耗 |
Microwave Absorption Properties of ZnO-carbonyl Iron Nanocomposites |
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| ZHOU Chang,FANG Qing-qing,YAN Fang-liang,LIU Yan-mei,LV Qing-rong,WU Ke-yue,ZHANG Qi-ping,ZHANG Han-ming. Microwave Absorption Properties of ZnO-carbonyl Iron Nanocomposites[J]. Journal of Magnetic Materials and Devices, 2010, 41(5) |
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| Authors: | ZHOU Chang FANG Qing-qing YAN Fang-liang LIU Yan-mei LV Qing-rong WU Ke-yue ZHANG Qi-ping ZHANG Han-ming |
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| Affiliation: | ZHOU Chang,FANG Qing-qing,YAN Fang-liang,LIU Yan-mei,LV Qing-rong,WU Ke-yue,ZHANG Qi-ping,ZHANG Han-ming School of Physics , Material Science,Anhui University,Hefei 230036,China |
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| Abstract: | We fabricated zinc oxide-carbonyl iron composite nanopparticles by high-energy ball milling and studied their electromagnetic parameters at frequency range of 0-20GHz.With prolonging the ball milling time,the particle size of absorber decreases,and the intensity of absorption peak increases.Comparison of absorbing properties,between different samples indicated that ZnO as a kind of dielectric material covering carbonyl iron particles,makes the absorption spectrum extend to the lower frequency,and enhance ab... |
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| Keywords: | carbonyl iron zinc oxide absorption material magnetic loss electric polarization loss. |
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