Polymorphic transformation from body-centered to face-centered cubic vanadium metal during mechanosynthesis of nanostructured vanadium nitride determined by extended x-ray absorption fine structure spectroscopy

López‐Flores, Víctor; Roldán, Manuel A.; Real, C.; Páez, Adela Muñoz; Castro, G.R.

doi:10.1063/1.2958324

Cited by 14 publications

(16 citation statements)

References 45 publications

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“…For both VC reference coatings, a pronounced pre-edge peak is observed, but for VN this peak is reduced to a shoulder. This observation is consistent with reference spectra for VC and VN reported in the literature (Wong et al, 1984;Ló pez-Flores et al, 2008). The pre-edge peak-shape difference cannot be explained by self-absorption effects, since the VC pre-edge peak is also clearly visible for the 40 nm coating where self-absorption effects are negligible.…”

Section: X-ray Absorption Near-edge Structuresupporting

confidence: 80%

Composition-dependent structure of polycrystalline magnetron-sputtered V–Al–C–N hard coatings studied by XRD, XPS, XANES and EXAFS

et al. 2013

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V-Al-C-N hard coatings with high carbon content were deposited by reactive radio-frequency magnetron sputtering using an experimental combinatorial approach, deposition from a segmented sputter target. The compositiondependent coexisting phases within the coating were analysed using the complementary methods of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), X-ray absorption near-edge spectroscopy (XANES) and extended X-ray absorption fine-structure spectroscopy (EXAFS). For the analysis of the X-ray absorption near-edge spectra, a new approach for evaluation of the pre-edge peak was developed, taking into account the selfabsorption effects in thin films. Within the studied composition range, a mixed face-centred cubic (V,Al)(C,N) phase coexisting with a C-C-containing phase was observed. No indication of hexagonal (V,Al)(N,C) was found. The example of V-Al-C-N demonstrates how important a combination of complementary methods is for the detection of coexisting phases in complex multi-element coatings.

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Section: X-ray Absorption Near-edge Structuresupporting

confidence: 80%

Composition-dependent structure of polycrystalline magnetron-sputtered V–Al–C–N hard coatings studied by XRD, XPS, XANES and EXAFS

et al. 2013

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“…[120] For several metals nitrides can be synthesized simply by ball milling the metal under a high pressure of nitrogen for greater than 10 hours. This method has given TiN, [121] ZrN, [122] VN, [123] NbN [124] and CrN [125] .…”

Section: Halides Sulphides and Nitridesmentioning

confidence: 99%

Mechanochemistry: opportunities for new and cleaner synthesis

et al. 2012

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Citation for published item:tmesD F vF nd edmsD gF tF nd folmD gF nd frgD hF nd gollierD F nd pri § s § i¡ D F nd qrepioniD pF nd rrrisD uF hF wF nd ryettD qF nd tonesD F nd uresD eF nd wkD tF nd winiD vF nd yrpenD eF qF nd rkinD sF F nd herouseD F gF nd teedD tF F nd ddellD hF gF @PHIPA 9wehnohemistry X opportunities for new nd lener synthesisF9D ghemil soiety reviewsFD RI @IAF ppF RIQERRUF Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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“…42 However, previous studies of V nanoparticles formed during ball-millling of V metal in a nitrogen atmosphere have observed the formation of fcc V, which is formed along with the formation of δ-VN. 55 The V metal formed towards the end of the discharge cycle is similarly nanoparticulate and presumably forms with a large number of defects, the former leading to a large surface to volume ratio. 13 Presumably, the fcc form minimizes the surface energies, 55 which is possibly further facilitated by the occlusion of C atoms into the structure from the electrolyte.…”

mentioning

confidence: 99%

Multiple Redox Modes in the Reversible Lithiation of High-Capacity, Peierls-Distorted Vanadium Sulfide

et al. 2015

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ABSTRACTcompound. Eventually reduction to Li 2 S plus elemental V occurs. Despite the complex redox processes involving both the cation and the anion occurring in this material, the system is found to be partially reversible between 0 and 3 V. The unusual redox processes in this system are elucidated using a suite of short range characterization tools including 51 V Nuclear Magnetic Resonance spectroscopy (NMR), S Kedge X-ray Absorption Near Edge Spectroscopy (XANES) and Pair Distribution Function (PDF) Analysis of X-ray data.2

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Polymorphic transformation from body-centered to face-centered cubic vanadium metal during mechanosynthesis of nanostructured vanadium nitride determined by extended x-ray absorption fine structure spectroscopy

Abstract: Comparison of surface oxidation of titanium nitride and chromium nitride films studied by xray absorption and photoelectron spectroscopy

Cited by 14 publications

References 45 publications

Composition-dependent structure of polycrystalline magnetron-sputtered V–Al–C–N hard coatings studied by XRD, XPS, XANES and EXAFS

Composition-dependent structure of polycrystalline magnetron-sputtered V–Al–C–N hard coatings studied by XRD, XPS, XANES and EXAFS

Mechanochemistry: opportunities for new and cleaner synthesis

Multiple Redox Modes in the Reversible Lithiation of High-Capacity, Peierls-Distorted Vanadium Sulfide

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