X-ray absorption spectroscopy study of buried Co layers in the Co/Mo₂C multilayer mirrors

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• 作者：Yanyan Yuan ; Karine Le Guen ; Yuchun Tu ; Jingtao Zhu ; Zhanshan Wang ; Wenbin Li ; Mingwu Wen ; Christian Mé ; ny ; Haisheng Yu ; Yuying Huang ; Xiangjun Wei and Philippe Jonnard
• 刊名：Surface and Interface Analysis
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：49
• 期：3
• 页码：205-209
• 全文大小：392K
• ISSN：1096-9918

文摘

X-ray absorption spectroscopy at the Co K edge was applied to investigate the chemical environment of Co atoms inside Co/Mo₂C periodic multilayers. The results show a mixing between Co and Mo₂C layers prior to any annealing process, whereas following annealing from 300 °C pure Co layers are observed. X-ray absorption spectroscopy results are in agreement with previous nuclear magnetic resonance spectroscopy results. They indicate that the pure Co content increases upon annealing, while it is absent in the as-deposited samples. The comparison of the results, based on the analysis of the data obtained on the multilayer samples and some reference materials, reveals that the ordering of Co atoms inside the Co layers increases upon annealing. Copyright