Cu2S-EuS phase diagram |
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| Authors: | O. V. Andreev A. V. Ruseikina |
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| Affiliation: | 1. Tyumen State University, Tyumen, Russia
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| Abstract: | In the Cu2S-EuS system, a eutectic is formed between Cu2S- and EuS-based solid solutions (ss) at (1069 ± 2) K, 24.5 mol % EuS. EuS dissolves 7.0 (at 1770 K), 5.0 (1170 K), and 3.0 (770 K) mol % Cu2S. A ??-Cu2S-based ss is of the open type, has an extent (mol %) of 15.5 (at 1069 K), 7.5 (970 K), 4.5 (770 K), 2.5 (520 K), and 1.5 (379 K) EuS, and melts incongruently at 1186 K, 7.0 mol % EuS. ??-Cu2S at 379 K dissolves 6.5 mol % EuS; ??-Cu2S at (1186 ± 3) K dissolves 3.5 mol % EuS. |
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