Fig. 2: Differential scanning calorimetry measurement of the product from high-pressure synthesis. | Communications Chemistry

Fig. 2: Differential scanning calorimetry measurement of the product from high-pressure synthesis.

From: Locating hydrogen in the Mg5Bi3Hx Zintl phase

Fig. 2

The phase mixture contains Mg3Bi2 and the new phase Mg5Bi3Hx. The exothermal signal in the inset is attributed to the decomposition of Mg5Bi3Hx into Mg3Bi2 and Mg(Bi). All effects occurring at higher temperatures are endothermal upon heating in accordance with the phase diagram refs. 20,21,22. The signal at 756 K is assigned to the melting of Mg(Bi), the one at 822 K is attributed to the melting of the eutectic mixture. At 959 K the transformation of the low-temperature modification of Mg3Bi2 into the high-temperature form is indicated, and 990 K corresponds to the liquidus.

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