High resolution x-ray diffraction methodology for the structural analysis of one-dimensional nanostructures

We present a systematic high-resolution x-ray diffraction (HRXRD) methodology for the analysis of one-dimensional nanostructures, in order to give answer to some of the frequently found problems in the literature. Regarding the assessment of structural properties, it is well known that high resoluti...

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Veröffentlicht in:Journal of applied physics 2012-07, Vol.112 (1)
Hauptverfasser: Martínez-Tomás, M. C., Montenegro, D. N., Sallet, V., Muñoz-Sanjosé, V.
Format: Artikel
Sprache:eng
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Zusammenfassung:We present a systematic high-resolution x-ray diffraction (HRXRD) methodology for the analysis of one-dimensional nanostructures, in order to give answer to some of the frequently found problems in the literature. Regarding the assessment of structural properties, it is well known that high resolution x-ray diffraction measurements can provide qualitative and quantitative information on several intrinsic parameters of the material. However when nanostructures are present, the difficulties in analyzing the diffracted signals coming from nanostructures and the homolayer on which they usually grow have led to a reduced use of this technique, one of the most powerful methods for structural analysis. The aim of this paper is to develop a methodology for the analysis of one-dimensional structures based on the mosaic model similar to the one used in the x-ray diffraction methods for layers and films. On this basis, it has been possible by making a careful and systematic application of HRXRD to obtain separated structural information of nanostructures and the layer/block/grain underneath. In addition, the existence of a long-range ordering of nanostructures has been studied from the detection and analysis of forbidden reflections. The HRXRD experimental work has been particularized on ZnO nanorods grown by catalyst-free metal organic chemical deposition on c-sapphire substrates.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4730403