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Article Dans Une Revue Bioinorganic chemistry Année : 2014

Detecting Non-bridging Oxygens: Non-Resonant Inelastic X-ray Scattering in Crystalline Lithium Borates

Résumé

Probing the local environment of low-Z elements, such as oxygen, is ofgreat interest for understanding the atomic-scale behavior in materials, but it requiresexperimental techniques allowing it to work with versatile sample environments. In thispaper, the local environment of lithium borate crystals is investigated using nonresonantinelastic X-ray scattering (NRIXS) at energy losses corresponding to theoxygen K-edge. Large variations of the spectral features are observed close to the edgeonset in the 535−540 eV energy range when varying the Li2O content. Calculationsallow identification of contributions associated with bridging oxygen (BO) and nonbridgingoxygen (NBO) atoms. The main result resides in the observed core-level shiftof about 1.7 eV in the spectral signatures of the BO and NBO. The clear signature at535 eV in the O K-edge NRXIS spectrum is thus an original way to probe the presence of NBOs in borates, with the greatadvantage of making possible the use of complex environments such as a high-pressure cell or high-temperature device for in situmeasurements
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Dates et versions

hal-01088029 , version 1 (27-11-2014)

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Citer

Gérald Lelong, Guillaume Radtke, Laurent Cormier, Hanane Bricha, Jean-Pascal Rueff, et al.. Detecting Non-bridging Oxygens: Non-Resonant Inelastic X-ray Scattering in Crystalline Lithium Borates. Bioinorganic chemistry, 2014, 53 (20), pp.1. ⟨10.1021/ic501730q⟩. ⟨hal-01088029⟩
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