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High-pressure synthesis of SmGe3

MPG-Autoren
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Hübner,  Julia-Maria
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Carrillo-Cabrera,  Wilder
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Cardoso-Gil,  Raul
Raul Cardoso, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Koželj,  Primož
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Burkhardt,  Ulrich
Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Akselrud,  Lev
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Grin,  Yuri
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Schwarz,  Ulrich
Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Zitation

Hübner, J.-M., Carrillo-Cabrera, W., Cardoso-Gil, R., Koželj, P., Burkhardt, U., Etter, M., et al. (2020). High-pressure synthesis of SmGe3. Zeitschrift für Kristallographie-Crystalline Materials, 235(8-9), 333-339. doi:10.1515/zkri-2020-0058.


Zitierlink: https://hdl.handle.net/21.11116/0000-0007-5C68-E
Zusammenfassung
The new samarium germanide SmGe3 is obtained by high-pressure high-temperature synthesis of pre-reacted mixtures of samarium and germanium at a pressure of 9.5 GPa and temperatures between 1073 and 1273 K. SmGe3 decomposes at 470(5) K into SmGe2, alpha-Sm3Ge5 and a hitherto unknown phase. SmGe3 exhibits a superstructure of the cubic Cu3Au-type. Transmission electron microscopy measurements of crystalline particles and prepared lamellae indicate a high density of defects on the nanoscale. Selected area electron diffraction and elaborate X-ray powder diffraction measurements consistently indicate a 2a(0) x 2a(0) x 2a(0) superstructure adopting space group Fm (3) over barm with a = 8.6719(2) angstrom.