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 ...

The team demonstrated that by optimizing both tetrahedral and octahedral sites in the spinel structure, they could surpass the limitations of the volcanic curve and achieve significant performance ...

“By leveraging spinel’s unique properties ... work like the perfect setup to control electron spin, the transparent structure ...