Princeton University10 年
Spinel, part 1
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 ...
Interesting Engineering on MSN10 天
After diamonds, scientists create qubit centers in gemstone spinel
Scientists introduced atomic defects in spinel using cerium, and voilà! The gemstone became a solid qubit system.