Spinel, MgAl 2 O 4 (download cif), is a rare gemstone that was used to imitate rubies. The structure has face-centered cubic symmetry, and is a little heavy to understand. The general formula is AB 2 ...

Scientists introduced atomic defects in spinel using cerium, and voilà! The gemstone became a solid qubit system.

The superalloy formed lubricating spinel-based oxides and did not thicken or lose friction tolerance. The researchers note that it could be the unique structure of spinel itself helping it ...

The superalloy formed lubricating spinel-based oxides and did not thicken or lose friction tolerance. The researchers note that it could be the unique structure of spinel itself helping it outcompete ...