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Supplemental Literature Review: Section III

Mg-Sm (Magnesium-Samarium) H. Okamoto

The Mg-Sm phase diagram in [Massalski2] was redrawn from [1989Sac]. The phase relationships among Sm allotropes were uncertain. Figure 1 shows the Mg-Sm phase diagram calculated by [2008Jia] based primarily on the work of [1989 Sac]. Possible relationships among Sm allotropes are shown. Mg-Sm crystal structure data given in Table 1 were adopted from [Massalski2] with the composition ranges modified according to [2008Jia].

Table 1 Phase (Mg) Mg41Sm5 Mg5Sm Mg3Sm Mg2Sm MgSm (cSm) (bSm) (aSm)

References 1989Sac: A. Saccone, S. Delfino, G. Borzone, and R. Ferro, The Samarium-Magnesium System: A Phase Diagram, J. LessCommon Met., 1989, 154, p 47-60 2008Jia: B.R. Jia, L.B. Liu, D.Q. Yi, Z.P. Jin, and J.F. Nie, Thermodynamic Assessment of the Al-Mg-Sm System, J. Alloys Compds., 2008, 459, p 267-273

Mg-Sm crystal structure data Composition, at.% Sm

Pearson symbol

Space group

Strukturbericht designation

Prototype

0 10.9 16.7 25 33.3 50 69.7-100 94.2-100 97.15-100

hP2 tI92 cF444 cF16 cF24 cP2 cI2 hP2 hR3

P63/mmc I4/m F 43m Fm3m Fd 3m Pm3m Im3m P63/mmc R3m

A3 ... ... D03 C15 B2 A2 A3 ...

Mg ... ... BiF3 Cu2Mg CsCl W Mg aSm

Fig. 1 Mg-Sm phase diagram

Journal of Phase Equilibria and Diffusion Vol. 30 No. 3 2009

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