| 铁磁薄膜中非线性静磁表面波的传播 |
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| 引用本文： | A. D. BOARDMAN,鲍家善,王奇,蔡英时,S. A. NIKITOV.铁磁薄膜中非线性静磁表面波的传播[J].物理学报,1991,40(10):1703-1711. |
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| 作者姓名： | A. D. BOARDMAN 鲍家善 王奇 蔡英时 S. A. NIKITOV |
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| 作者单位： | (1)Department of Pure and Applied Physics,University of Salford,UK.; (2)Institute of Radio Engineering and Electronics,USSR Academy of Science,Moscow,USSR; (3)上海科学技术大学物理系,上海,201800 |
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| 摘 要： | 本文用微扰理论导出了横向磁化条件下铁磁薄膜中非线性静磁表面波满足的运动方程和它的解析解。获得非线性色散关系,揭示了传播功率致使静磁表面波频带压缩。研究了群色散和非线性频移随频率和薄膜厚度的变化规律。证明了横向磁化时非线性MSSW不能以静磁孤子的形式存在。
关键词：
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| 关 键 词： | 铁磁薄膜 非线性 静磁表面波 波导 |
| 收稿时间： | 1990-11-19 |
PROPAGATION OF NONLINEAR MAGNETOSTATIC SURFACE WAVES ON FERROMAGNETIC FILM |
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| A. D. BOARDMAN,BAO JIA-SHAN,WANG QI,CAI YING-SHI and S. A. NIKITOV.PROPAGATION OF NONLINEAR MAGNETOSTATIC SURFACE WAVES ON FERROMAGNETIC FILM[J].Acta Physica Sinica,1991,40(10):1703-1711. |
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| Authors: | A D BOARDMAN BAO JIA-SHAN WANG QI CAI YING-SHI and S A NIKITOV |
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| Abstract: | The wave equation for nonlinear magnctostatic surface waves (MSSW) on ferromagnetic film is derived with perturbation theory under the condition of transverse magnetisation, and its solution is found. The nonlinear dispersion relation shows that a high wave power results in a reduction of frequency band of MSSW. The variations of group velocity dispersion and nonlinear frequency shift with the wave frequency and film thickness are also studied. The results show that the bright pulse envelope solitons can not exist in our case. |
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