Roughness in manganite-based superlattices

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• 作者：J.C. Rojas Sá ; nchez ; M. Granada ; L.B. Steren ; I. Mazzaro ; D.H. Mosca
• 关键词：Perovskite multilayers ; Crystalline structure
• 刊名：Applied Surface Science
• 出版年：2007
• 期刊代码：6_01694332
• 类别：ms
• 出版时间：31 October 2007
• 卷：254
• 期：1
• 页码：219-221
• 文件大小：324 K

摘要

In this work we present a structural analysis of La_0.75Sr_0.25MnO₃/LaNiO₃ (LSMO/LNO) superlattices, performed by X-ray diffraction spectroscopy and X-ray reflectivity. The samples were deposited by dc magnetron sputtering on single-crystalline (0 0 1) oriented SrTiO₃. The strain relaxation and the roughness at the interfaces were estimated from the analysis of the X-ray patterns. The thickness of LSMO reference layers has been measured by means of low-angle X-ray reflectivity, finding a very good agreement with the nominal values.