Ge-Sr (Germanium-Strontium)

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The Ge-Sr phase diagram in [Massalski2] was tentative. [2005Pal] investigated the phase diagram of this system using differential thermal analysis and x-ray diffraction. The result is shown in Fig. 1. In this phase diagram, the thermal effect observed at 925 °C is not accounted for. The existence of Ge1.85Sr in the equilibrium diagram in the form as shown in Fig. 1 must be reexamined because very delicate (hence unlikely) balance is needed among the thermodynamic properties of the phases involved (L, Ge2Sr, Ge1.85Sr). Ge-Sr crystal structure data are given in Table 1.

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