An unexpected cubic symmetry in group IV alloys prepared using pressure and temperature
| Autor: | Hans J. Reichmann, Kristina Spektor, George Serghiou, Wilson A. Crichton, Anna S. Pakhomova, Zuzana Konôpková, Nicholas Odling |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Diffraction
Materials science ALLOYS PRESSURE AND TEMPERATURE Alloy Crystal structure engineering.material 010402 general chemistry 01 natural sciences Catalysis Diamond anvil cell alloys pressure and temperature angle dispersive X-ray diffraction MATERIALS SYNTHESIS Research Articles ANGLE DISPERSIVE X-RAY DIFFRACTION 010405 organic chemistry Diamond SOLID SOLUTIONS General Chemistry General Medicine Symmetry (physics) REACTIVITY 0104 chemical sciences Crystallography Atomic radius ddc:540 engineering ddc:660 Materials Synthesis pressure and temperatue solid solution Solid solution Research Article |
| Zdroj: | 'Angewandte Chemie International Edition ', vol: 60, pages: 9009-9014 (2021) Angewandte Chemie / International edition 60(16), 9009-9014 (2021). doi:10.1002/anie.202016179 Angewandte Chemie (International Ed. in English) Angewandte Chemie-International Edition Serghiou, G, Reichmann, H J, Odling, N, Spektor, K, Pakhomova, A, Crichton, W & Konôpková, Z 2021, ' An unexpected cubic symmetry in group IV alloys prepared using pressure and temperature ', Angewandte Chemie International Edition, vol. 60, no. 16, pp. 9009-9014 . https://doi.org/10.1002/anie.202016179 Angewandte Chemie 133(16), 9091-9096 (2021). doi:10.1002/ange.202016179 |
| ISSN: | 1433-7851 |
| DOI: | 10.1002/anie.202016179 |
| Popis: | Angewandte Chemie / International edition 60(16), 9009 - 9014 (2021). doi:10.1002/anie.202016179 The cubic diamond (Fd-3m) group IVA element Si has been the material driver of the electronics industry since its inception. We report synthesis of a new cubic (Im-3m) group IVA material, a GeSn solid solution, upon heating Ge and Sn at pressures from 13 to 28 GPa using double-sided diamond anvil laser-heating and large volume press methods. Both methods were coupled with in-situ angle dispersive X-ray diffraction characterization. The new material substantially enriches the seminal group IVA alloy materials landscape by introducing an eightfold coordinated cubic symmetry, which markedly expands on the conventional tetrahedrally coordinated cubic one. This cubic solid solution is formed, despite Ge never adopting the Im-3m symmetry, melting inhibiting subsequent Im-3m formation and reactant Ge and Sn having unlike crystal structures and atomic radii at all these pressures. This is hence achieved without adherence to conventional formation criteria and routes to synthesis. This advance creates fertile avenues for new materials development. Published by Wiley-VCH, Weinheim |
| Databáze: | OpenAIRE |
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