Effect of Hydrogen Intercalation on the Structure of YBa2Cu3Oy with a Low Oxygen Content

摘要

We used Raman spectroscopy to study the interaction of YBa2Cu3Oy (123) (y = 6.5) with hydrogen at temperatures of 150-200 degrees C. In contrast to the YBa2Cu3O6.96 compound, compositions with low oxygen contents show a lower tendency to form stacking faults. We found that the hydrogenation of these compositions does not lead to the transformation of the 123 phase to the pseudo-124 phase. Absorbed hydrogen does not react with oxygen in 123 and does not form hydroxyl groups. The HxYBa2Cu3Oy oxyhydride is the hydration-reaction product.