In alumina-rich spinel, Al3þ replacing Mg2þ ions on tetrahedral sites with charge compensating cation vacancies on the octahedral sites accommodates the excess alumina stoichiometry range in the crystal structure.
In alumina-rich spinel, Al3þ replacing Mg2þ ions on tetrahedral sites with charge compensating cation vacancies on the octahedral sites accommodates the excess alumina stoichiometry range in the crystal structure.