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Crystal structures of three intermetallic phases in the Mo–Pt–Si system

Joubert, J.-M.
Published in Journal of Solid State Chemistry. 2010, vol. 183, no. 1, p. 173-179
Abstract The crystal structures of three ternary Mo–Pt–Si intermetallic compounds have been determined ab initio from powder X-ray diffraction data. All three structures are representative of new structure types. Both the X (MoPt2Si3, Pmc21, oP12, a=3.48438(6), b=9.1511(2), c=5.48253(8) Å) and Y (MoPt3Si4, Pnma, oP32, a=5.51210(9), b=3.49474(7), c=24.3090(4) Å) phases derive from PtSi (FeAs type) structure while the Z phase (ideal composition Mo32Pt20Si16, refined composition Mo29.9(2)Pt21.0(3)Si17.1(1), Cc, mC68, a=13.8868(3), b=8.0769(2), c=9.6110(2) Å, β=100.898(1)°) present similarities with the group of Frank-Kasper phases.
Keywords Mo–Pt–SiIntermetallic compoundAb initio powder structure determinationSilicideFrank-Kasper
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JOUBERT, J.-M., TOKAYCHUK, Yaroslav, CERNY, Radovan. Crystal structures of three intermetallic phases in the Mo–Pt–Si system. In: Journal of Solid State Chemistry, 2010, vol. 183, n° 1, p. 173-179. https://archive-ouverte.unige.ch/unige:35440

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Deposited on : 2014-04-08

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