Effect of Strontium doping on the Oxygen Diffusion in La 2−x Sr x CuO 4±δ samples Investigated by Oxygen Isotope Back Exchange
| Autor: | Lukas Keller, Monica Ceretti, Carmelo Prestipino, Ekaterina Pomjakushina, Werner Paulus, Jürg Schefer, K. Conder, R. Sura |
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| Přispěvatelé: | Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Laboratory for Neutron Scattering and Imaging [Paul Scherrer Institute] (LNS), Paul Scherrer Institute (PSI) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
History
Strontium Oxygen-18 Stable isotope ratio Diffusion Neutron diffraction Analytical chemistry chemistry.chemical_element 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Oxygen Isotopes of oxygen 0104 chemical sciences Computer Science Applications Education chemistry 0210 nano-technology Oxygen-16 |
| Zdroj: | Journal of Physics: Conference Series Journal of Physics: Conference Series, IOP Publishing, 2012, 340 (1), pp.012110. ⟨10.1088/1742-6596/340/1/012110⟩ |
| ISSN: | 1742-6588 1742-6596 |
| DOI: | 10.1088/1742-6596/340/1/012110⟩ |
| Popis: | International audience; Similar to LaCoO 4.14 , La 2−x Sr x CuO 4±δ shows oxygen diffusion at moderate temperatures. The Oxygen Isotope Back Exchange (OIBE) experiments are done in order to investigate the effect of strontium on the oxygen diffusion in as grown single crystals of La 2−x Sr x CuO 4±δ (x = 0, 0.05, 0.1, 0.15). Neutron diffraction data collected at TriCS@SINQ are in agreement with diffusion measurements achieved by oxygen back exchange. From 18 O/ 16 O isotope exchange between 40 °C to 1000 °C free oxygen mobility can be realized for x = 0, 0.05 below 500 °C but is depressed for x = 0.1 and 0.15. This gives evidence that low temperature oxygen mobility can be suppressed by replacing La with Sr. First crystal test using neutron single crystal diffraction proved the high quality of the samples. |
| Databáze: | OpenAIRE |
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