单轴各向异性下磁性薄膜自旋波共振频率  

Spin Wave Resonance Frequencies in Magnetic Thin Films with Uniaxial Anisotropy

作　　者：张舒飞 荣建红[1] 马瑞娇 王焕[2] ZHANG Shufei;RONG Jianhong;MA Ruijiao;WANG Huan(School of Physical Science and Technology,Inner Mongolia University,Hohhot 010021,China;College of Science,Inner Mongolia Agricultural University,Hohhot 010018,China)

机构地区：[1]内蒙古大学物理科学与技术学院,呼和浩特010021 [2]内蒙古农业大学理学院,呼和浩特010018

出　　处：《内蒙古大学学报（自然科学版）》2021年第4期365-370,共6页Journal of Inner Mongolia University：Natural Science Edition

基　　金：内蒙古自治区自然科学基金(批准号:2019MS01021);内蒙古自治区高等学校科学研究项目(批准号:NJZY21454)。

摘　　要：采用线性自旋波近似和格林函数方法,研究了外加磁场、单轴各向异性和表面各向异性场对磁性薄膜自旋波共振频率的影响。结果发现:系统自旋波共振频率随着外加磁场的增强而增大;表面各向异性场对能量较低两支模的频隙影响较大,而单轴各向异性则对能量最高和最低支模间的频隙影响较大.The dependences of spin-wave resonance(SWR)frequencies on the external magnetic field,the uniaxial anisotropy and the surface anisotropy in a ferromagnetic film have been investigated by using the linear spin-wave approximation and Green’s function method.We show that the SWR frequencies of all modes increase with the external magnetic field increasing.Moreover,the surface anisotropy has a large effect on the gap of two lower modes,however,the gap between the highest and lowest modes is dramatically influenced by the uniaxial anisotropy.

关 键 词：自旋波共振 单轴各向异性 表面各向异性 

分 类 号：O484.4[理学—固体物理]