Determination of bond lengths, atomic mean-square relative displacements, and local thermal expansion by means of soft-x-ray photoabsorption

Tröger, L.; Yokoyama, Toshihiko; Arvanitis, D.; Lederer, Thomas; Tischer, M.; Baberschke, K.

doi:10.1103/physrevb.49.888

Cited by 132 publications

(87 citation statements)

References 80 publications

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“…The curve fittings obtained for Bose-Einstein and Cody's formula are better than that of Varshni. Although the Einstein temperature Â E values for ZnO reported in this work is smaller than some values were previously reported [28,32], these values are in agreement with the result reported by Troger et al [27] (Â E ≥ 730 K)…”

Section: Resultssupporting

confidence: 94%

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Temperature dependence of the optical band gap of sol-gel derived Fe-doped ZnO films

Ilıcan

Özdemir

Çağlar

et al. 2016

Optik

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Section: Resultssupporting

confidence: 94%

“…7 were fitted by using Varshni equation and given in this figure. The obtained fitting seems to be not so good but our fitting parameters are in good agreement with previously published studies [27][28][29][30][31]. The similar results related with linear temperature dependence of the optical band gap were reported in Zn(Fe,Al)O material [18].…”

Section: Resultssupporting

confidence: 93%

Temperature dependence of the optical band gap of sol-gel derived Fe-doped ZnO films

Ilıcan

Özdemir

Çağlar

et al. 2016

Optik

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“…σ 2 S and C 3S are the temperature independent (or static) contributions to the total disorder and asymmetry, respectively. Further discussion of the correlated Einstein model and application to various materials can be found in [42,[51][52][53][54]. Table 3 (1) and (2)).…”

Section: Resultsmentioning

confidence: 99%

Ion Beam Formation and Modification of Cobalt Nanoparticles

Sprouster

Ridgway

2012

Applied Sciences

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This article reviews the size-dependent structural properties of ion beam synthesized Co nanoparticles (NPs) and the influence of ion irradiation on the size, shape, phase and structure. The evolution of the aforementioned properties were determined using complementary laboratory-and advanced synchrotron-based techniques, including cross-sectional transmission electron microscopy, small-angle X-ray scattering and X-ray absorption spectroscopy. Combining such techniques reveals a rich array of transformations particular to Co NPs. This methodology highlights the effectiveness of ion implantation and ion irradiation procedures as a means of fine tuning NP properties to best suit specific technological applications. Furthermore, our results facilitate a better understanding and aid in identifying the underlying physics particular to this potentially technologically important class of nanomaterials.

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“…The raw data analysis was performed using the IFEFFIT program [17,18]. The basic EXAFS data, χ(k), were fit to the equation…”

Section: X-ray Absorption Fine Structure Spectrometrymentioning

confidence: 99%

Cellular Toxicity of TiO2 Nanoparticles in Anatase and Rutile Crystal Phase

Jin

Tang

Yang

et al. 2010

Biol Trace Elem Res

156

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Titanium dioxide nanoparticles are massively produced and widely used in daily life, which has posed potential risk to human health. However, the molecular mechanism of TiO(2) nanoparticles (NPs) with different crystal phases is not clear. In this study, the characterization of two crystalline phases of TiO(2) NPs is evaluated by transmission electron microscopy and X-ray absorption fine structure spectrum; an interaction of these TiO(2) NPs with HaCaT cells is studied in vitro using transmission electron microscopy, chemical precipitation method, and X-ray absorption fine structure spectrometry. The coordination and surface properties indicate that only the anatase-TiO(2) NPs allow spontaneous reactive oxygen species (ROS) generation, but rutile-TiO(2) NPs do not after dispersion. The interaction between TiO(2) NPs and cellular components might also generate ROS for both anatase-TiO(2) NPs and rutile-TiO(2) NPs. The ROS generation could lead to cellular toxicity if the level of ROS production overwhelms the antioxidant defense of the cell or induces the mitochondrial apoptotic mechanisms. Furthermore, Ti had a direct combination with some protein or DNA after NPs enter the cell, which could also lead to cellular toxicity.

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Determination of bond lengths, atomic mean-square relative displacements, and local thermal expansion by means of soft-x-ray photoabsorption

Cited by 132 publications

References 80 publications

Temperature dependence of the optical band gap of sol-gel derived Fe-doped ZnO films

Temperature dependence of the optical band gap of sol-gel derived Fe-doped ZnO films

Ion Beam Formation and Modification of Cobalt Nanoparticles

Cellular Toxicity of TiO2 Nanoparticles in Anatase and Rutile Crystal Phase

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