Sr1+ δCrO3-x外延薄膜

IF 3.2 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Crystal Growth & Design Pub Date : 2025-04-08 DOI:10.1021/acs.cgd.4c0111510.1021/acs.cgd.4c01115

Dong Han, Bruno Canut, Guillaume Saint-Girons and Romain Bachelet*,

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引用次数: 0

摘要

采用固体源分子束外延（MBE）共沉积法在SrTiO3（001）衬底上生长出−0.14≤δ≤0.14的Sr1+δ cro3 - x外延薄膜。报道了阳离子化学计量偏差（δ）对结构性能的影响。尽管与衬底存在明显的面内晶格失配（~ 2.25%），但所有薄膜都具有平面外延，呈现低嵌合性（~ 0.1°），并保持钙钛矿基结构。然而，δ >会自发形成一个附加的Ruddlesden-Popper （RP）相（n = 2）；0 (Sr-rich)。这些结果对于进一步研究Sr1+δ cro3 - x基薄膜在器件中的结构-性能关系具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Sr1+δCrO3–x Epitaxial Thin Films

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Sr1+δCrO3–x Epitaxial Thin Films

Sr_1+δCrO_3–x epitaxial thin films with −0.14 ≤ δ ≤ 0.14 were grown on SrTiO₃(001) substrates by solid-source molecular beam epitaxy (MBE) in codeposition. The impact of the deviation from the cationic stoichiometry (δ) on the structural properties is reported. In spite of a significant in-plane lattice mismatch with the substrate (∼2.25%), all films are epitaxial with flat surfaces, present low mosaicity (∼0.1°), and keep a perovskite-based structure. However, an additional Ruddlesden–Popper (RP) phase is spontaneously formed (n = 2) for δ > 0 (Sr-rich). These results are important for further studies on structure–property relationships in the view to exploit the functional properties of Sr_1+δCrO_3–x-based films in devices.

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来源期刊

Crystal Growth & Design 化学-材料科学：综合

CiteScore

6.30

自引率

10.50%

发文量

650

审稿时长

1.9 months

期刊介绍： The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials. Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.