High-pressure synthesis of SmGe3
2020 ◽
Vol 235
(8-9)
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pp. 333-339
Keyword(s):
X Ray
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AbstractThe 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, α-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 2a0 × 2a0 × 2a0 superstructure adopting space group $Fm\overline{3}m$ with a = 8.6719(2) Å.
2010 ◽
Vol 636
(9-10)
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pp. 1695-1702
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1999 ◽
Vol 8
(2-5)
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pp. 738-742
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2013 ◽
Vol 747-748
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pp. 124-131
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2013 ◽
Vol 664
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pp. 449-453
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2014 ◽
Vol 1040
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pp. 171-175
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