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材料研究学报  2007, Vol. 21 Issue (4): 389-394    
  论文 本期目录 | 过刊浏览 |
A-B两层铁磁耦合薄膜中的自旋波共振谱
侯小娟  云国宏
引用本文:

侯小娟; 云国宏 . A-B两层铁磁耦合薄膜中的自旋波共振谱[J]. 材料研究学报, 2007, 21(4): 389-394.

全文: PDF(538 KB)  
摘要: 在Heisenberg模型的基础上,计入垂直于膜面的磁场,考虑表面各向异性场情况下,精确求解了简立方结构双层异质铁磁薄膜中的自旋波低能量子本征值问题.又在此基础上加上平行于膜面方向的交变磁场,应用量子理论严格推导了两层异质铁磁耦合薄膜中的自旋波共振激发,并在不同表面条件下计算了各种形式的自旋波共振谱.结果表明:1)共振峰强度与交变场振幅的平方成正比,与本征态中单个自旋反转对应的几率幅的模的平方成正比,即自旋波共振的平方律关系;2)由于表面各向异性场对不同形式的自旋波激发谱都产生影响,从而也影响自旋波的共振谱.
Key words
收稿日期: 1900-01-01     
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