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Section III: Supplemental Literature Review

Er-Zn (Erbium-Zinc) H. Okamoto

A schematic Er-Zn phase diagram in [Massalski2] was drawn by [Moffatt] based on information summarized by [1970Bru]. [2005Sac] investigated the Er-Zn system by means of differential thermal analysis, x-ray diffraction, optical and scanning electron microscopy, and electron probe microanalysis. The result is shown in Fig. 1. Er2Zn17 is reported to be dimorphic, but the polymorphic transformation temperature has not been reported. Er-Zn crystal structure data shown in Table 1 were obtained from [2005Sac] and [Pearson3].

References 1970Bru: G. Bruzzone, M.L. Fornasini, and F. Merlo, Rare-Earth Intermediate Phases with Zinc, J. Less-Common Met., 1970, 22, p 253-264 2005Sac: A. Saccone, A.M. Cardinale, S. Delfino, and R. Ferro, Binary Phase Diagrams of the Rare Earth Metals with Zinc: the Tb-Zn, Ho-Zn, and Er-Zn Systems, Z. Metallkd., 2005, 96(12), p 1369-1379

Fig. 1 Er-Zn phase diagram

Table 1 Phase (Er) ErZn ErZn2 ErZn3 Er13Zn58 ErZn5 bEr2Zn17 aEr2Zn17 ErZn12 (Zn)

316

Er-Zn crystal structure data Composition, at.% Zn

Pearson symbol

Space group

Struktur-bericht designation

Prototype

0 50 66.7 75 81.7 83.3 89.5 89.5 92.3 100

hP2 cP2 oI12 oP16 hP142 hP36 hR19 hP38 tI26 hP2

P63/mmc Pm3m Imma Pnma P63/mc P63/mmc R3m P63/mmc I4/mmm P63/mmc

A3 B2 ... ... ... ... ... ... D2b A3

Mg CsCl CeCu2 YZn3 Gd13Zn58 ErZn5 Th2Zn17 Th2Ni17 Mn12Th Mg

Journal of Phase Equilibria and Diffusion Vol. 28 No. 3 2007