New Technique for Investigating Noncrystalline Structures: Fourier Analysis of the Extended X-Ray—Absorption Fine Structure

Sayers, D. E.; Stern, Edward A.; Lytle, F. W.

doi:10.1103/physrevlett.27.1204

Cited by 1,381 publications

(621 citation statements)

References 8 publications

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“…The higher photoelectron kinetic energy in the EXAFS region implies that the phenomenon is no longer dominated by the full multiple-scattering regime, which instead dominates in the XANES region [134]; consequently, data analysis can be performed using the simpler Fourier transform operation [82,87].…”

Section: X-ray Transient Absorption: Theoretical Background and Expermentioning

confidence: 99%

“…An example is provided for cis-[Ru(bpy) 2 (py) 2 ] 2+ (aqueous solution) in figure 5c, where the energy range around the Ru K-edge-highlighted in magenta in part (b) of the same figure-is expanded to appreciate the edge fine structure and the associated oscillations. Such modulation in the absorption coefficient is derived from the interference between the outgoing photoelectron wave diffusing from the absorber and the wavefronts backscattered by the neighbouring atoms [87,88]. In a typical XAS experiment, the energy range around the edge probed is conventionally divided into two different regions (figure 5c):…”

Section: X-ray Transient Absorption: Theoretical Background and Expermentioning

confidence: 99%

“…Hence, EXAFS oscillations can be related via Fourier transform to a specific spatial arrangement of the atoms in the local environment of the absorber, bridging the energy space to the real distances R-space. This crucial point is the basis of the EXAFS analysis procedure developed after the milestone works of Sayers, Lytle and Stern [87,88,134].…”

Section: X-ray Transient Absorption: Theoretical Background and Expermentioning

confidence: 99%

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Synchrotron ultrafast techniques for photoactive transition metal complexes

Borfecchia

Garino

Salassa

et al. 2013

Phil. Trans. R. Soc. A.

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In the last decade, the use of time-resolved X-ray techniques has revealed the structure of lightgenerated transient species for a wide range of samples, from small organic molecules to proteins. Time resolutions of the order of 100 ps are typically reached, allowing one to monitor thermally equilibrated excited states and capture their structure as a function of time. This review aims at providing a general overview of the application of timeresolved X-ray solution scattering (TR-XSS) and time-resolved X-ray absorption spectroscopy (TR-XAS), the two techniques prevalently employed in the investigation of light-triggered structural changes of transition metal complexes. In particular, we herein describe the fundamental physical principles for static XSS and XAS and illustrate the theory of timeresolved XSS and XAS together with data acquisition and analysis strategies. Selected pioneering examples of photoactive transition metal complexes studied by TR-XSS and TR-XAS are discussed in depth.

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Section: X-ray Transient Absorption: Theoretical Background and Expermentioning

confidence: 99%

Section: X-ray Transient Absorption: Theoretical Background and Expermentioning

confidence: 99%

Section: X-ray Transient Absorption: Theoretical Background and Expermentioning

confidence: 99%

See 1 more Smart Citation

Synchrotron ultrafast techniques for photoactive transition metal complexes

Borfecchia

Garino

Salassa

et al. 2013

Phil. Trans. R. Soc. A.

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“…This was originally proposed by Sayer et al 34 , based in a single-scattering formulism but can be generalized to represent the contribution of N equivalent multiplescattering contributions of path length 2R 31 . It can be thus considered the standard EXAFS formulae, providing a convenient parameterization for fitting the local structure around the absorbing atoms.…”

Section: Xafsmentioning

confidence: 99%

Techniques for the Study of the Structural Properties

Rodríguez

Fernández-García

Martı́nez-Arias

et al. 2006

Synthesis, Properties, and Applications of Oxide Nanomaterials

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“…Therefore, the aim of this work is to investigate the atomic interdiffusion phenomenon and the structural changes during mechanical alloying process of Fe50Cr50 metastable alloys. The magnetization was examined by using the vibrating sample magnetometer (VSM), and the local structure was analyzed by the synchrotron X-ray absorption fine structure (EXAFS) study [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of Fe₅₀Cr₅₀Alloys Prepared by Mechanical Alloying Method

Yang¹,

Park²,

Yoo³

et al. 2010

Journal of Magnetics

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Fe50Cr50 metastable alloys were prepared by the mechanical alloying method with milling periods of 1, 2, 4, 6, 12 and 24 hours, respectively. The structural evolution was analyzed by the extended x-ray absorption fine structure (EXAFS). In this work, the EXAFS analysis provided the local structural information around Fe central atom. The saturation magnetization was also measured by VSM. The magnetization decreased as the process mechanical alloying progressed. The magnetic property was related to the local structural variation as a function of processing time. The analysis showed that the diffusion Cr atoms into Fe clusters caused the reduction of magnetization. EXAFS analysis exhibited that the local ordering of magnetic atoms caused the magnetic ordering. Also, EXAFS analysis showed that the long range order of Fe atoms was destroyed completely in 24 hour milling.

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New Technique for Investigating Noncrystalline Structures: Fourier Analysis of the Extended X-Ray—Absorption Fine Structure

Cited by 1,381 publications

References 8 publications

Synchrotron ultrafast techniques for photoactive transition metal complexes

Synchrotron ultrafast techniques for photoactive transition metal complexes

Techniques for the Study of the Structural Properties

Structural and Magnetic Properties of Fe₅₀Cr₅₀Alloys Prepared by Mechanical Alloying Method

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New Technique for Investigating Noncrystalline Structures: Fourier Analysis of the Extended X-Ray—Absorption Fine Structure

Cited by 1,381 publications

References 8 publications

Synchrotron ultrafast techniques for photoactive transition metal complexes

Synchrotron ultrafast techniques for photoactive transition metal complexes

Techniques for the Study of the Structural Properties

Structural and Magnetic Properties of Fe50Cr50Alloys Prepared by Mechanical Alloying Method

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Product

Resources

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Structural and Magnetic Properties of Fe₅₀Cr₅₀Alloys Prepared by Mechanical Alloying Method