| 填充因子对同质铁磁膜中本征激发的影响 |
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| 引用本文： | 周文平,云国宏,梁希侠.填充因子对同质铁磁膜中本征激发的影响[J].内蒙古大学学报(自然科学版),2007,38(3):278-282. |
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| 作者姓名： | 周文平 云国宏 梁希侠 |
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| 作者单位： | 内蒙古大学理工学院物理系,呼和浩特,010021 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划
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高等学校博士学科点专项科研项目
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内蒙古古大学青年科学基金 |
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| 摘 要： | 采用改进的界面重参数方法,讨论了周期边界条件下同质双层铁磁膜中自旋波本征激发问题.当保持系统的总厚度N不变,调节填充因子f=NA/N时,发现系统的所有本征激发能均会受到影响,其中f=1/2时的奇数支模的激发能最低,偶数支模的激发能最高.声学型界面模存在不受填充因子影响,而光学型界面模在填充因子f=1/2时最易存在.
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| 关 键 词： | 磁性多层膜 自旋波 改进的界面重参数方法 填充因子 填充因子 铁磁膜 本征激发 影响 Films Homogeneous Waves Spin Filling Factor 光学 存在 面模 声学 偶数 支模 奇数 激发能 发现 调节 总厚度 |
| 文章编号： | 1000-1638（2007）03-0278-05 |
| 修稿时间： | 2006-12-29 |
Effect of the Filling Factor on the Eigenexcitation of Spin Waves in Homogeneous Ferromagnetic Bilayered Films |
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| ZHOU Wen-ping,YUN Guo-hong,LIANG Xi-xia.Effect of the Filling Factor on the Eigenexcitation of Spin Waves in Homogeneous Ferromagnetic Bilayered Films[J].Acta Scientiarum Naturalium Universitatis Neimongol,2007,38(3):278-282. |
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| Authors: | ZHOU Wen-ping YUN Guo-hong LIANG Xi-xia |
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| Institution: | Department of Physics, Inner Mongolia University, Hohhot 010021, China |
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| Abstract: | The eigenproblems of spin waves in a homogeneous ferromagnetic bilayered system with periodic boundary conditions are solved by using the improved interface-rescaling approach.Here the filling factor f is defined as the ratio of the thickness NA of the sublayer A to the whole thickness N of the system.The results are obtained as follows:the excitation energies of all eigenmodes in the system would change when f is changed and when N keeps a constant,the excitation energy of odd modes is the smallest while which of even modes is the biggest when f=1/2;the filling factor f does not affect conditions for the existence of the acoustic-type interface mode,however,the optic-type interface mode easily appears when f=1/2. |
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| Keywords: | magnetic multilayer spin wave filling factor the improved interfaee-rescaling approach the |
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