Atomic structure of nanomaterials: combined X-ray diffraction and EXAFS studies

Belyakova, O. A.; Zubavichus, Yan V.; Neretin, Ivan S.; Golub, A. S.; Novikov, Yu. N.; Mednikov, Evgueni G.; Варгафтик, М. Н.; Моисеев, И. И.; Slovokhotov, Yu.L.

doi:10.1016/j.jallcom.2004.05.047

Cited by 20 publications

(14 citation statements)

References 24 publications

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“…It can yield information about atomic distances and average co-ordination numbers in the structure, thus providing complementary information to XRD. [55][56][57] For small nanoparticles, the EXAFS signal at longer distances can be severely damped due to the finite particle size, since atoms on the surface of the particle have lower coordination numbers than those in the core. [58,59] EXAFS can also yield insights into the coordination environment around a target atom in bimetallic particles, distinguishing between alloys and segregated structures.…”

Section: Introductionmentioning

confidence: 99%

X-ray scattering characterisation of nanoparticles

Ingham

2015

Crystallography Reviews

144

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This article provides, in tutorial style, a review of X-ray scattering methods commonly used to characterise nanoparticles and gives numerous case studies of basic science and industrial applications right up to the present. It is divided into two major sections, broadly covering Xray diffraction and small-angle X-ray scattering. Each section begins with a brief introduction to the technique and the information that can be obtained by using it, followed by a discussion on experimental considerations, with a particular focus on nanoparticle characterisation. The techniques and analysis methods are demonstrated by way of examples of a wide variety of nanoparticle materials and synthesis methods. Recent advances in related techniques such as anomalous scattering and pair distribution function analysis are also described and discussed.

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Section: Introductionmentioning

confidence: 99%

X-ray scattering characterisation of nanoparticles

Ingham

2015

Crystallography Reviews

144

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“…These techniques are widely used for the characterization of complex materials (e.g. Belyakova et al, 2004;Zhang et al, 2005;Ferná ndez-García et al, 2007;Lee et al, 2007;Xu et al, 2007;Teng et al, 2008). They provide complementary information, since the first probes the long-range order, whereas the second probes the short-range order.…”

Section: Introductionmentioning

confidence: 99%

Synchrotron X-ray powder diffraction and extended X-ray absorption fine structure spectroscopy studies on nanocrystalline ZrO₂–CaO solid solutions

et al. 2008

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The crystal structure and the local atomic order of a series of nanocrystalline ZrO2–CaO solid solutions with varying CaO content were studied by synchrotron radiation X‐ray powder diffraction and extended X‐ray absorption fine structure (EXAFS) spectroscopy. These samples were synthesized by a pH‐controlled nitrate–glycine gel‐combustion process. For CaO contents up to 8 mol%, the t′ form of the tetragonal phase (c/a > 1) was identified, whereas for 10 and 12 mol% CaO, the t′′ form (c/a = 1; oxygen anions displaced from their ideal positions in the cubic phase) was detected. Finally, the cubic phase was observed for solid solutions with CaO content of 14 mol% CaO or higher. The t′/t′′ and t′′/cubic compositional boundaries were determined to be at 9 (1) and 13 (1) mol% CaO, respectively. The EXAFS study demonstrated that this transition is related to a tetragonal‐to‐cubic symmetry change of the first oxygen coordination shell around the Zr atoms.

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“…The study [42] is of particular interest due to a combination of EXAFS spectroscopy and powder X-ray diffraction (DFA) methods. Synchrotron radiation was used in the study.…”

Section: Objects Of Investigation and Modelsmentioning

confidence: 99%

X-ray diffraction analysis of ultradisperse systems: The Debye formula

Tsybulya

Yatsenko

2012

J Struct Chem

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Problems of X-ray diffraction analysis of ultradisperse systems with the particle size up to 5 nm are discussed in the review. A method for calculating X-ray diffraction patterns using the Debye formula within the kinematic theory of X-ray scattering (Debye Function Analysis-DFA) is presented. The DFA method makes it possible to obtain information on the atomic structure, shape and size of nanoparticles, and verify hypotheses on the presence of deformations, stacking faults and other structural features of ultradisperse and nanostructured systems. The method is applicable for modeling the diffraction patterns of objects with an arbitrary (not necessarily crystal) structure. Applications of the method for examining the structure of various objects are discussed.

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Atomic structure of nanomaterials: combined X-ray diffraction and EXAFS studies

Cited by 20 publications

References 24 publications

X-ray scattering characterisation of nanoparticles

X-ray scattering characterisation of nanoparticles

Synchrotron X-ray powder diffraction and extended X-ray absorption fine structure spectroscopy studies on nanocrystalline ZrO₂–CaO solid solutions

X-ray diffraction analysis of ultradisperse systems: The Debye formula

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Atomic structure of nanomaterials: combined X-ray diffraction and EXAFS studies

Cited by 20 publications

References 24 publications

X-ray scattering characterisation of nanoparticles

X-ray scattering characterisation of nanoparticles

Synchrotron X-ray powder diffraction and extended X-ray absorption fine structure spectroscopy studies on nanocrystalline ZrO2–CaO solid solutions

X-ray diffraction analysis of ultradisperse systems: The Debye formula

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Product

Resources

About

Synchrotron X-ray powder diffraction and extended X-ray absorption fine structure spectroscopy studies on nanocrystalline ZrO₂–CaO solid solutions