We have investigated the electronic and structural properties of chromia a typical Mott–Hubbard insulator. We considered the antiferromagnetic insulating ground state and the paramagnetic insulating state above the Néel temperature 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
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© 2001 American Institute of Physics.
2001
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