Surface morphologies and magnetic properties of Fe and Co magnetic thin films on polyethylene naphthalate organic substrates
Surface morphologies and magnetic properties of Fe and Co magnetic thin films on polyethylene naphthalate organic substrates
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DOI：
10.1063/1.3670609
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发表时间：
2012-04
影响因子：
3.2
通讯作者：
H. Kaiju;T. Abe;K. Kondo;A. Ishibashi
中科院分区：
文献类型：
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作者：
H. Kaiju;T. Abe;K. Kondo;A. Ishibashi
为了制备自旋量子交叉器件，我们研究了在聚萘二甲酸乙二醇酯（PEN）有机衬底上蒸镀的Fe和Co薄膜的表面形貌和磁性。其结果是，Co（6.1 nm）/PEN和Co（12 nm）/PEN的表面粗糙度分别小至0.1和0.09 nm，对应于小于一个原子层，在相同的扫描尺度的厚度。对于磁性能，Co/PEN的矫顽力在Co厚度从35 nm减小到10 nm时显示出2 kA/m的恒定值，并且在Co厚度从10 nm减小到5 nm时增加到7 kA/m。当Co厚度小于5 nm时，其减小。这些结果可以用形状磁各向异性和感生磁各向异性之间的竞争来解释。
We have studied the surface morphologies and magnetic properties of Fe and Co thin films evaporated on polyethylene naphthalate (PEN) organic substrates toward the fabrication of spin quantum cross devices. As a result, the surface roughnesses of Co (6.1 nm)/PEN and Co (12 nm)/PEN are as small as 0.1 and 0.09 nm, respectively, corresponding to less than one atomic layer, in the same scanning scale as the thickness. As for the magnetic properties, the coercive force of the Co/PEN shows the constant value of 2 kA/m upon decreasing the Co thickness from 35 to 10 nm, and it increases up to 7 kA/m upon decreasing the Co thickness from 10 to 5 nm. It decreases when the Co thickness is less than 5 nm. These results can be explained by the competition between the shape magnetic anisotropy and the induced magnetic anisotropy.