Structural Aspects of Fe–Mg Artificial Superstructure Films Studied by X-Ray Diffraction
Structural Aspects of Fe–Mg Artificial Superstructure Films Studied by X-Ray Diffraction
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通过 X 射线衍射研究 Fe-Mg 人造上部结构薄膜的结构
DOI：
10.1143/jpsj.55.251
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发表时间：
1986
影响因子：
1.7
通讯作者：
T. Shinjo
中科院分区：
文献类型：
--
作者：
Y. Fujii;T. Ohnishi;T. Ishihara;Y. Yamada;Kenji Kawaguchi;N. Nakayama;T. Shinjo
在[Fe（15 A）|Mg（30 A）] 60薄膜，其超结构周期为Λ=45 A，在（110）Fe/（00.1）Mg织构层内的体结构布拉格反射中观察到显著的峰展宽和强度降低。这样的衍射轮廓已经很好地解释了一个扩展的步骤模型，它考虑了随机分布的超结构周期，根据高斯分布的宽度ΔΛ/Λ= 5.4%的变化。该值对应于约一个单层厚度。在另外两种ASF的Fe层中也观察到织构的损失，其Fe层厚度小于15埃，这似乎是形成织构Fe层的临界值。
In the [Fe(15 A)|Mg(30 A)] 60 film with its superstructure period , Λ=45 A, the significant peak-broadening and intensity-reduction are observed in Bragg reflections from the bulk structures within the (110)Fe/(00.1)Mg-textured layers. Such a diffraction profile has been well explained by an extended step model, which takes into account a random distribution of the superstructure period, varying according to a gaussian distribution with the width ΔΛ/Λ=5.4%. This value corresponds to about one monolayer thickness. A loss of the texture has been also observed in the Fe layer of other two ASF's with their Fe-layer thickness less than 15 A, which seems to be a critical value for the formation of the textured Fe layer.