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X-ray diffraction and X-ray standing-wave study of the lead stearate film structure

机译:硬脂酸铅薄膜结构的X射线衍射和X射线驻波研究

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摘要

A new approach to the study of the structural quality of crystals is proposed. It is based on the use of X-ray standing-wave method without measuring secondary processes and considers the multiwave interaction of diffraction reflections corresponding to different harmonics of the same crystallographic reflection. A theory of multiwave X-ray diffraction is developed to calculate the rocking curves in the X-ray diffraction scheme under consideration for a long-period quasi-one-dimensional crystal. This phase-sensitive method is used to study the structure of a multilayer lead stearate film on a silicon substrate. Some specific structural features are revealed for the surface layer of the thin film, which are most likely due to the tilt of the upper layer molecules with respect to the external normal to the film surface.
机译:提出了一种研究晶体结构质量的新方法。它是基于使用X射线驻波法而不测量次级过程的情况,并考虑了与同一晶体学反射的不同谐波相对应的衍射反射的多波相互作用。在考虑长周期准一维晶体的情况下,发展了多波X射线衍射理论来计算X射线衍射方案中的摇摆曲线。该相敏方法用于研究硅衬底上的多层硬脂酸铅薄膜的结构。揭示了薄膜表面层的一些特定结构特征,这很可能是由于上层分子相对于薄膜表面的外部法线的倾斜。

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