Electromagnetic and Microwave Absorbing Properties of Co-Substituted Nickel-Zinc Ferrite
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第2期
论文作者：Su Lanying Mao Changhui Wu Laying Yang Zhimin
Key words：Co-substituted Ni-Zn ferrite; zero reflection conditions; magnetic properties;
Abstract: Co-substituted Ni-Zn ferrite was prepared by a chemical codeposition. The electromagnetic properties, zero reflection conditions and simulated reflection losses of the samples were investigated. As a result, it is found that with Co contents rising, the saturation magnetization (Ms) shows a tendency of decrease, while coercivity (Hc) varies clearly. In addition, Ni-Zn ferrite with different cobalt content can meet zero reflection conditions. And the reflection loss calculation indicates that with the increase of cobalt contents, the reflection loss peak moves to high frequenc; moreover, to increase Co content more than 0.15, and the absorption intensity as well as the absorbing band of microwave absorber are enhanced obviously.
Su Lanying1，Mao Changhui1，Wu Laying1，Yang Zhimin1
(1.Research Center of Energy Materials & Technology,General Research Institute for Non-Ferrous Metals,Beijing 100088,China)
Abstract:Co-substituted Ni-Zn ferrite was prepared by a chemical codeposition. The electromagnetic properties, zero reflection conditions and simulated reflection losses of the samples were investigated. As a result, it is found that with Co contents rising, the saturation magnetization (Ms) shows a tendency of decrease, while coercivity (Hc) varies clearly. In addition, Ni-Zn ferrite with different cobalt content can meet zero reflection conditions. And the reflection loss calculation indicates that with the increase of cobalt contents, the reflection loss peak moves to high frequenc; moreover, to increase Co content more than 0.15, and the absorption intensity as well as the absorbing band of microwave absorber are enhanced obviously.
Key words:Co-substituted Ni-Zn ferrite; zero reflection conditions; magnetic properties;
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