| 多晶微波铁氧体材料中的铁磁弛豫过程研究 |
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| 引用本文： | 韩志全. 多晶微波铁氧体材料中的铁磁弛豫过程研究[J]. 磁性材料及器件, 2003, 34(2): 1-3 |
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| 作者姓名： | 韩志全 |
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| 作者单位： | 中国西南应用磁学研究所,四川绵阳,621000 |
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| 摘 要： | 基于晶粒表层自旋波共振模型对有效线宽行为的成功解释,提出在多晶中存在一个由晶粒表层自旋波系统到晶格的弛豫过程,这一弛豫过程在非共振区是微波能量损耗的主渠道。
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| 关 键 词： | 微波铁氧体 损耗 铁磁共振 有效线宽 |
| 文章编号： | 1001-3830(2003)02-0001-03 |
| 修稿时间： | 2002-09-17 |
Channels of Energy Transfer on Polycrystalline Microwave Ferrite |
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| HAN Zhi-quan Southwest Institute of Applied Magnetics,Mianyan ,China. Channels of Energy Transfer on Polycrystalline Microwave Ferrite[J]. Journal of Magnetic Materials and Devices, 2003, 34(2): 1-3 |
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| Authors: | HAN Zhi-quan Southwest Institute of Applied Magnetics Mianyan China |
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| Affiliation: | HAN Zhi-quan Southwest Institute of Applied Magnetics,Mianyan 621000,China |
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| Abstract: | The relaxation process via the spin wave system in the grain-surface-layer to the lattice is proposed as the chief channel of microwave energy transfer for polycrystalline materials. This relaxation mechanism is based on the fact that the model of the spin wave resonance in the grain-surface-layer successfully explained the behaviors of off-resonance effective linewidth. In the model it was considered that the anisotropy constant Ks and the anisotropy field Hs in the grain-surface-layer are different from the anisotropy constant and the anisotropy field in the grain-interior. |
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| Keywords: | microwave ferrite energy losses ferromagnetic resonance effective linewidth |
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