Bulk high-temperature superconductivity in bilayer nickelate under high pressure

https://phys.org/news/2024-10-scientists-bulk-high-temperature-superconductivity.html

"Tc ≈ 80K, pressures above 14GPa, in La3-xPrxNi2O7-δ... can be prepared in a relatively large quantity with better controlled quality and reproducibility via the wet-chemistry sol-gel method... ideal Ruddlesden-Popper structure, but intergrowths of 327/4310 and 327/214 phases detrimental factors... diamagnetic response with 97% superconducting shielding volume fraction"