Nickelate materials later proved to be a promising direction for superconductivity research.

“good path to superconductivity he was actually trying nickelates, the nickel oxygen and some uh cadions and that didn't work and then he tried cuprates, just copper copper oxygen and some cadions and that worked. And then he got a Nobel prize. But then we know that later on turns out nickelates was a good idea. I mean nickel and copper next each other on”