We have investigated the electronic and structural properties of chromia (Cr2O3), a typical Mott–Hubbard insulator. We considered the T=0 K antiferromagnetic insulating ground state and the paramagnetic insulating state above the Néel temperature (TN). Our treatment of the latter resembles in principle a virtual crystal model of the random spins insulator and describes reasonably well the compressive behavior of chromia above and the structural anomalies across TN.

Topics
Magnetism, Paramagnetic materials, Transition metal oxides
© 2001 American Institute of Physics.
2001
American Institute of Physics
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