| 侧向YIG/YAG超晶格表面极化子与体连续模式的研究 |
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| 引用本文： | 刘艳芬,刘晓华,孙为民,刘晓军.侧向YIG/YAG超晶格表面极化子与体连续模式的研究[J].齐齐哈尔大学学报(自然科学版),2014(4):84-88. |
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| 作者姓名： | 刘艳芬 刘晓华 孙为民 刘晓军 |
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| 作者单位： | 齐齐哈尔大学理学院,黑龙江齐齐哈尔161006 |
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| 基金项目： | 齐齐哈尔大学青年教师科研启动支持计划项目（2011k-M31）;黑龙江省教育厅科学技术研究项目（11541398） |
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| 摘 要： | 在Voigt位型下利用等效磁导率张量及Maxwell方程组计算了推迟模式下半无限超晶格自旋波谱的色散方程及体连续方程,并以YIG/YAG超晶格为例进行数值计算,着重分析该超晶格的表面模式和体模式,通过改变构成超晶格的两种层的厚度的比值、外场时,可以调节两支表面模式的频率以及体模式的频带和禁带,这种调节作用是与两种层的饱和磁化值和旋磁比密切相关的。
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| 关 键 词： | YIG/YAG超晶格 推迟模式 等效介质理论 表面模式和体模式 |
Study on model of surface polaron and continuous body of lateral YIG/YAG superlattice |
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| LIU Yan-fen,LIU Xiao-hua,SUN Wei-min,LIU Xiao-jun.Study on model of surface polaron and continuous body of lateral YIG/YAG superlattice[J].Journal of Qiqihar University(Natural Science Edition),2014(4):84-88. |
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| Authors: | LIU Yan-fen LIU Xiao-hua SUN Wei-min LIU Xiao-jun |
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| Institution: | ( School of Science, Qiqihar University, Heilongjiang Qiqihar 161006, China ) |
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| Abstract: | Under the Voigt based on equivalent permeability tensor and Maxwell＇s equations, dispersion equation and continuous body equation of semi-infinite superlattice spin wave spectrum was calculated in the retarded modes. We took the YIG/YAG superlattice as the example and analyzed of the surface modes and bulk modes. Changing the ratio of the thicknesses of two ferromagnetic superlattice layers and field, the two branches of surface mode of frequency and bulk mode frequency band can be adjusted consequently. This modulation effect is related to the two ferromagnetic layer’saturation magnetization and gyromagnetic ratio. |
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| Keywords: | YIG/YAG superlattice retarded modes equivalent medium theory surface modes and bulk modes |
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