Abstract

Abstract An angle-dispersive X-ray diffraction study was performed on the Fe–Sn intermetallic compounds FeSn2, FeSn, and Fe3Sn to a pressure of 25 GPa using nitrogen as a pressure-transmitting medium and gold as a pressure marker. The samples were prepared with phase purities of more than 97%. These intermetallics show no phase transition to the highest pressure achieved. Our data fitted to the Birch–Murnaghan equation of state yield: K 0 = 86 ( 2 ) GPa for FeSn2, K 0 = 94 ( 2 ) GPa for FeSn, and K 0 = 122 ( 3 ) GPa for Fe3Sn. The c/a ratio increases with pressure for FeSn2 and Fe3Sn but decreases for FeSn.

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