Abstract

The phase diagram of the Eu–Sn system has been investigated in the whole composition range using differential thermal analysis, metallographic analysis, X-ray diffraction and electron microscopy. Five intermediate phases have been found. Two of them have been confirmed: EuSn3 (AuCu3-type) and EuSn (CrB-type); while Eu3Sn5 (Pu3Pd5-type), Eu5Sn3 (W5Si3-type) and Eu2Sn (Co2Si-type) have been prepared and characterized for the first time. Four eutectic points occur in this system: at 5 at% Sn and 790°C, 44 at% Sn and 1075°C, 74 at% Sn and 785°C and at less than 1 at% Eu and 230°C.

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