Extended x-ray absorption fine structure investigations of Nb3Ge0.26Al0.74 |
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| Institution: | 1. Department of Chemistry, Payame Noor University (PNU), Tehran, Iran;2. Department of Chemistry, Amirkabir University of Technology, Tehran, Iran;3. Fuel Cell and Solar Energy Lab, Renewable Energy Research Center, Amirkabir University of Technology, Tehran, Iran;4. Department of Chemistry, Naragh Branch, Islamic Azad University, Naragh, Iran;1. SCK CEN, Nuclear Materials Science Institute, Boeretang 200, B-2400 Mol, Belgium;2. University of Liège, Place du 20 Août 7, B-4000 Liège, Belgium;3. Université Catholique de Louvain, Institute of Mechanics, Materials and Civil Engineering, Louvain-la-Neuve 1348, Belgium;4. Université Paris-Saclay, CEA, Service de Recherches de Métallurgie Physique, Laboratoire JANNUS, 91191, Gif-sur-Yvette, France |
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| Abstract: | We have performed Extended X-ray Absorption Fine Structure (EXAFS) studies of the high-Tc ternary superconducting alloy Nb3Ge0.26Al0.74 above the Ge K-edge. The EXAFS indicates that the local environment surrounding the Ge atoms is characterized by a high degree of structural order, similar to that found in previous investigations of high-Tc Nb3Ge thin films. We also present direct “microscopic” structural evidence that this material is a solid solution of Nb3Ge and Nb3Al. No evidence of Nb3Ge microcrystals is observed. |
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