Synthesis of Y-Ba-Cu-O superconductors from Y2O3 BaO2, and Cu2O: The optional oxygen treatment

Rational Solid-State Synthesis Routes for Inorganic Materials

“…In agreement with these reports, peroxide-driven routes from PIRO (Figure b and Table ) dominate the Pareto-optimal regions, predicted to outperform the common precursor routes above. In particular, the BaO 2 –Cu 2 O–Y 2 O 3 route (R4), which was reported to be highly favorable for producing phase-pure YBCO with no carbonate impurities, , is predicted to be one of the most favorable routes in Figure b. The method overall remains predictive even when a reaction’s in situ pathway may potentially involve intermediate steps, which can be explained by the explicit localized consideration of each possible reaction front between the reactants and target for catalytic nucleation, isolated from any other concurrent precipitations.…”

“…In fact, achieving phase purity and completion through these conventional routes is known to be challenging (requiring long calcination times, intermittent grindings, oxygenation, etc.) and therefore many alternative routes have been pursued for the solid-state synthesis of YBCO. , Among these, peroxide (BaO 2 )-driven combustion routes with different Cu sources, such as metallic Cu, Cu 2 O, , and CuO, ,− have received notable attention, as they enable shorter, often single-step synthesis. In agreement with these reports, peroxide-driven routes from PIRO (Figure b and Table ) dominate the Pareto-optimal regions, predicted to outperform the common precursor routes above.…”

“…4(b) and Table 3) dominate the Paretooptimal regions, predicted to outperform the common precursor routes above. In particular, the BaO 2 -Cu 2 O-Y 2 O 3 route (R4), which was reported to be highly favorable for producing phase-pure YBCO with no carbonate impurities, 72,73 is predicted as one of the most-favorable routes in Fig. 4(b).…”

Rational Solid-State Synthesis Routes for Inorganic Materials

“…In agreement with these reports, peroxide-driven routes from PIRO (Fig.4(b) and Table 3) dominate the Pareto-optimal regions, predicted to outperform the common precursor routes above. In particular, the BaO 2 -Cu 2 O-Y 2 O 3 route (R4), which was reported to be highly favorable for producing phase-pure YBCO with no carbonate impurities, 70,71 is predicted as one of the most-favorable routes in Fig. 4(b).…”