X-ray absorption fine structure study of small metal clusters isolated in rare-gas solids

Montano, P. A.; Purdum, H.; Shenoy, G. K.; Morrison, T. I.; Schulze, W.

doi:10.1016/0039-6028(85)90578-3

Cited by 37 publications

(16 citation statements)

References 13 publications

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“…Recently, Apai et al 37 conducted EXAFS studies of Cu clusters supported on carbon. Similar studies of Au and Ag clusters were carried out by Balerna et al 38 and Montano et al 39 These studies indicate, as one would expect for these metals, that the localized d-electrons, play an important role in the electronic structure. Hence, the d-states and their interactions with the extended s-states need to be carefully accounted for in a proper theoretical treatment of these materials.…”

Section: Introductionsupporting

confidence: 76%

“…Consequently one obtains a pronounced shell closing effect. 55 Although the noble metals Cu, Ag and Au have closed d shells and singly occupied outermost s shell structures and several authors have suggested that there should be a close similarity to the shell closing effect in simple alkali metals, cohesive studies in the bulk metal and a series of EXAFS studies of Cu clusters supported on carbon 37,39 indicate that the d electrons, through their hybridization with the s electrons, play an important role in the electronic structure and binding energy of these systems. Winter et al 69 have also indicated through a series of experiments which include mass spectroscopy, oxygen and water absorption, that there is a competition of jellium-like electronic behaviour and icosahedral geometrical closure effects in small copper clusters.…”

Section: Introductionmentioning

confidence: 99%

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STUDY OF SMALL METALLIC NANOPARTICLES: AN AB-INITIO FULL-POTENTIAL MUFFIN-TIN ORBITALS BASED MOLECULAR DYNAMICS STUDY OF SMALL Cu CLUSTERS

Kabir

Mookerjee

Datta³

et al. 2003

Int. J. Mod. Phys. B

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The equilibrium structures and cohesive energies of small Cun clusters using the full-potential muffin-tin orbitals (FP-LMTO) based molecular dynamics (MD) have been studied for n ≤ 9. The results obtained have been compared with other chemical methods. We propose the FP-LMTO-MD technique to be a useful starting point of more empirical methods which can efficiently deals with larger cluster sizes relevant for nanoparticles.

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Section: Introductionsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

STUDY OF SMALL METALLIC NANOPARTICLES: AN AB-INITIO FULL-POTENTIAL MUFFIN-TIN ORBITALS BASED MOLECULAR DYNAMICS STUDY OF SMALL Cu CLUSTERS

Kabir

Mookerjee

Datta³

et al. 2003

Int. J. Mod. Phys. B

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“…The iron small molecule work in neon matrices was also presented in conference proceedings which included a comparison of Mössbauer data in Ar and Xe matrices [120,121]. The work on small iron molecules, and dimers in argon matrices in particular, appears to have been continued as a revised Fe2 bond length of 1.94(2) Å was reported in a variety of conference proceedings but scant experimental data or its analysis was presented [122][123][124][125].…”

Section: Fe K-edge Studiesmentioning

confidence: 99%

The application of synchrotron radiation and in particular X-ray absorption spectroscopy to matrix isolated species

Young

2014

Coordination Chemistry Reviews

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This review provides comprehensive coverage of the application of X-ray absorption spectroscopy (XAS, XAFS, EXAFS, XANES) to matrix isolated species. As X-ray absorption spectroscopy provides structural data without the need for long range order it has been applied to a large number of systems to yield unique structural data about both the matrix isolated species, and their interactions with the matrix host. To put the work into perspective there is a tutorial introduction to the theoretical background of X-ray absorption spectroscopy, data content, processing and analysis. In addition there is brief coverage of the use of other synchrotron radiation techniques for the study of matrix isolated species, and a consideration of future perspectives.

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“…Recently extended x-ray-absorption finestructure ͑EXAFS͒ measurements have been carried out for gold clusters isolated in a Mylar film, silver clusters in solid argon, etc. 10,11 With XRD experiments, however, it will be difficult to obtain data reliable enough to be analyzed quantitatively, because the broad patterns from the clusters are considerably perturbed by the intense Bragg reflections from the solid matrices.…”

Section: Introductionmentioning

confidence: 99%

In situgrazing-incidence x-ray-diffraction and electron-microscopic studies of small gold clusters

Koga¹,

Hattori²,

Ikeda

et al. 1998

Phys. Rev. B

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Small gold clusters having diameters of 1-3 nm have been studied by using x-ray-diffraction and electron microscopy. Large amounts of small gold clusters generated by the inert-gas vapor-condensation method were deposited on a silicon wafer cooled down to 92 K to avoid coalescence growth and grazing-incidence x-raydiffraction intensity from the cold cluster deposit was measured in situ. The diffraction pattern was analyzed and compared quantitatively with calculated patterns from several structural models considering the observed size distribution and found to be explainable approximately by a decahedral structure with geometrically closed shells. Electron-microscopic observations for gold clusters deposited sparsely on an amorphous carbon film at room temperature were also performed and decahedral multiply-twinned clusters 2-3 nm in diameter were frequently observed. This result agrees well with the x-ray statistical result, suggesting that the most dominant structure of small gold clusters prepared under our experimental conditions is the decahedral structure. The present experiments have demonstrated that an extremely weak x-ray-diffraction signal from such a small cluster can be measured quantitatively by preparing a cold cluster deposit.

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X-ray absorption fine structure study of small metal clusters isolated in rare-gas solids

Cited by 37 publications

References 13 publications

STUDY OF SMALL METALLIC NANOPARTICLES: AN AB-INITIO FULL-POTENTIAL MUFFIN-TIN ORBITALS BASED MOLECULAR DYNAMICS STUDY OF SMALL Cu CLUSTERS

STUDY OF SMALL METALLIC NANOPARTICLES: AN AB-INITIO FULL-POTENTIAL MUFFIN-TIN ORBITALS BASED MOLECULAR DYNAMICS STUDY OF SMALL Cu CLUSTERS

The application of synchrotron radiation and in particular X-ray absorption spectroscopy to matrix isolated species

In situgrazing-incidence x-ray-diffraction and electron-microscopic studies of small gold clusters

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