Three different Ge environments in a new Sr 5 CuGe 9 O 24 phase synthesized at high pressure and high temperature
| Autor: | Lei Ding, Pierre Bordet, Holger Klein, Claire V. Colin, Céline Darie, Rémy Philippe, Stéphanie Kodjikian |
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| Přispěvatelé: | Matériaux, Rayonnements, Structure (MRS), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS), Optique et microscopies (POM), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Diffraction
02 engineering and technology [CHIM.INOR]Chemical Sciences/Inorganic chemistry 01 natural sciences pyroxene Impurity Phase (matter) 0103 physical sciences Materials Chemistry [CHIM.CRIS]Chemical Sciences/Cristallography 010306 general physics Chemistry Electron crystallography Metals and Alloys high pressure -high temperature compound 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics structure determination Electronic Optical and Magnetic Materials Crystallography electron crystallography Electron diffraction Direct methods [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] 0210 nano-technology Stoichiometry Monoclinic crystal system |
| Zdroj: | Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials, International Union of Crystallography, 2020, 76 (5), pp.727-732. ⟨10.1107/S2052520620008914⟩ |
| ISSN: | 2052-5206 |
| DOI: | 10.1107/S2052520620008914⟩ |
| Popis: | International audience; In the framework of expanding the range of copper-based compounds in the pyroxene family we have synthesized at high pressure and high temperature a powder containing a mixture of a new phase with stoichiometry Sr5CuGe9O24 with two identified impurity phases. Electron crystallography showed that the new phase crystallizes with a monoclinic structure with cell parameters a = 11.6 Å, b = 8.1 Å, c = 10.4 Å and β = 101° and space group P2/c. We applied the recently developed low-dose electron diffraction tomography method to solve the structure by direct methods. The obtained structure model contains all 9 independent cation positions and all 13 oxygen positions. A subsequent refinement against X-ray powder diffraction data ascertained the high quality of the structure solution, in particular the unusual structural arrangement that there are three different environments for Ge in this phase. Synopsis The high-pressure high-temperature phase Sr5CuGe9O24 was solved by low-dose electron diffraction tomography and refined against X-ray powder diffraction data. The Ge ions in this compound have three different coordination numbers. |
| Databáze: | OpenAIRE |
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