PPT Slide

SPINEL MODEL

 (Ni2+, Al3+)1 (Ni2+, Al3+, Va)2 (Va)2 (O2-)4

“normal” NiAl2O4 - (Ni2+) (Al3+ Al3+) (Va)2 (O2-)4

“inverse” NiAl2O4 - (Al3+) (Ni2+ Al3+) (Va2) (O2-)4

“degree of inversion”

is the fraction of sites on the first sublattice occupied by Al3+

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