Determination of magnetic anisotropies in ultrathin iron films on vicinal Si(111) substrate by the ferromagnetic resonance
Determination of magnetic anisotropies in ultrathin iron films on vicinal Si(111) substrate by the ferromagnetic resonance
复制标题
铁磁共振测定邻位Si(111)衬底上超薄铁膜的磁各向异性
DOI：
10.1063/1.3396077
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发表时间：
2010-04-05
影响因子：
4
通讯作者：
Cheng, Zhao-Hua
中科院分区：
文献类型：
--
作者：
Du, Hai-Feng;He, Wei;Cheng, Zhao-Hua
以邻位Si（111）衬底为衬底，以2x2硅化铁为缓冲层，制备了45 μ m厚的Fe单晶薄膜。扫描隧道显微镜图像显示Fe纳米团簇在邻位衬底上形成链状结构。通过拟合铁磁共振数据，得到了薄膜的一阶、二阶磁晶各向异性和单轴磁各向异性常数。Fe（111）薄膜面内共振场的六重对称性由于邻位衬底的影响而变为四重和二重贡献的叠加。
Fe single crystal film with thickness of 45 monolayer was fabricated on vicinal Si(111) substrate using ultrathin p(2x2) iron silicide as buffer layer. Scanning tunneling microscope images show that the Fe nanoclusters form chains on vicinal substrate. The first- and second-order magnetocrystalline anisotropies, uniaxial magnetic anisotropy constants of the films were obtained by fitting the ferromagnetic resonance data. The sixfold symmetry of the in-plane resonance field for Fe(111) film was changed into the superposition of a fourfold and a twofold contribution due to the effect of the vicinal substrate.