Tetragonal phase in the Mg–Ni–Sn system

The structure of the Y-phase in the Mg–Ni–Sn system

“…The Mg-Ni-Sn system has been previously studied by Sommer et al [1], Arcondo et al [2], Su et al [3], Audebert et al [4] and more recently by Boudard et al [5]. A new ternary phase, called the Y-phase and with Mg 74.5 Ni 14.5 Sn 11 composition (in atomic (at.…”

“…A new ternary phase, called the Y-phase and with Mg 74.5 Ni 14.5 Sn 11 composition (in atomic (at. )%), was observed by optical microscopy, electron probe microanalysis (EPMA), powder and single crystal X-ray diffraction (XRD), Mössbauer spectroscopy and transmission electron microscopy (TEM) [2,4,5]. The powder samples were studied with compositions around the nominal one of the Y-phase.…”

“…The powder samples were studied with compositions around the nominal one of the Y-phase. The Y-phase is always in coexistence with at least one other phase such as Mg, Mg 2 Ni, Mg 2 Sn and some other non-identified phases [2,4,5]. Indexing of the powder XRD data shows that the Y-phase has a tetragonal cell with parameters a = b = 9.83(2) Å and c = 6.86(2) Å and complete crystallographic characterisation by TEM and single crystal XRD observations restrict the possible space group of the Y-phase to Nos.…”

“…Indexing of the powder XRD data shows that the Y-phase has a tetragonal cell with parameters a = b = 9.83(2) Å and c = 6.86(2) Å and complete crystallographic characterisation by TEM and single crystal XRD observations restrict the possible space group of the Y-phase to Nos. 77, 84, 93, 101, 116 and 132 [5]. In this work we present the complete results concerning the structure determination of the Y-phase by means of a XRD study on a single crystal.…”

“…Indeed, samples with composition near the one of the Y-phase can be obtained in amorphous state and different mechanisms were discussed in relation with the high GFA [3][4][5]. From a more general point of view, the structure of this new inter-metallic compound can help in the general understanding of the inter-metallic phases and of their particular chemical bonding [6].…”