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Characterization on surface and interface structure of epitaxial Pr0.7Sr0.3MnO3/La0.5Ca0.5MnO3/Pr0.7Sr0.3MnO3 trilayer
Wang, HO; Liu, H; Cao, MX; Tan, WS; Wang, XX; Xu, F; Wu, XS; Jia, QJ; Gao, J; Huo, DX; Jia QJ(贾全杰)
2015
发表期刊SUPERLATTICES AND MICROSTRUCTURES
卷号79页码:108-115
文章类型Article
摘要Epitaxial trilayers consisting of ferromagnetic (FM) metallic Pr0.7Sr0.3MnO3 (PSMO) and antiferromagnetic (AFM) insulators La0.5Ca0.5MnO3 (LCMO) were fabricated on (001)-oriented single crystal MgO substrates using pulsed laser deposition technique. High resolution X-ray diffraction (HRXRD), grazing incidence X-ray reflectivity (GIXRR) and atomic force microscope were applied to characterize the surface and interface structure of PSMO/LCMO/PSMO trilayers. The HRXRD patterns of all trilayers implied high quality of epitaxial layer. A structural model including seven layers was presented to theoretically simulate GIXRR data. The perfect GIXRR data fitting of the trilayers indicated that the thickness of the top sublayer at air/PSMO interface was about 2.5 nm for all the samples and the mass density of the top sublayer was about 77.66% of PSMO layer. In all trilayers, there existed two disordered layers with thickness of about 4 nm resulting from interdiffusion at the PSMO/LCMO interfaces. The root-mean-square (rms) roughness of the surface and interface in the trilayers varied with respect to the thickness of LCMO layer. The surface roughness was consistent with observation from atomic force microscopy. A further analysis indicated that the rms roughness was related to the mismatch strain relaxation in film. Moreover, studies on magnetic properties of PSMO/LCMO/PSMO trilayers show that ferromagnetic clusters at the interface, large roughness at the surface and interface and interdiffusion between PSMO and LCMO layer probably lead to the disappearance of exchange bias. (C) 2015 Elsevier Ltd. All rights reserved.
关键词Grazing incidence x-ray reflectivity Interface Roughness Strain Pr0.7Sr0.3MnO3/La0.5Ca0.5MnO3/Pr0.7Sr0.3MnO3
学科领域Physics
DOI10.1016/j.spmi.2014.12.020
收录类别SCI ; EI
WOS类目Physics, Condensed Matter
WOS记录号WOS:000350089400014
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228079
专题多学科研究中心
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GB/T 7714
Wang, HO,Liu, H,Cao, MX,et al. Characterization on surface and interface structure of epitaxial Pr0.7Sr0.3MnO3/La0.5Ca0.5MnO3/Pr0.7Sr0.3MnO3 trilayer[J]. SUPERLATTICES AND MICROSTRUCTURES,2015,79:108-115.
APA Wang, HO.,Liu, H.,Cao, MX.,Tan, WS.,Wang, XX.,...&贾全杰.(2015).Characterization on surface and interface structure of epitaxial Pr0.7Sr0.3MnO3/La0.5Ca0.5MnO3/Pr0.7Sr0.3MnO3 trilayer.SUPERLATTICES AND MICROSTRUCTURES,79,108-115.
MLA Wang, HO,et al."Characterization on surface and interface structure of epitaxial Pr0.7Sr0.3MnO3/La0.5Ca0.5MnO3/Pr0.7Sr0.3MnO3 trilayer".SUPERLATTICES AND MICROSTRUCTURES 79(2015):108-115.
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