Phys. Rev. Lett. 36, 1249–1252 (1976)Optical Study of Vanadium-Ion Interactions in (V2O3)x(Al2O3)1-xReceived 24 November 1975; published in the issue dated 24 May 1976 The magnetic and optical properties of all the phases of V2O3 show a loss of V3+-ion identity. Optical studies of (V2O3)x(Al2O3)1-x reported here show that V3+ - V3+ interactions between second and further near neighbors are too weak to destroy the V3+ identity. This result suggests the possibility that the basic localized-electron unit in the antiferromagnetic insulating phase may be the nearest-neighbor pairs, with the electrons delocalized within a pair. © 1976 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.36.1249
DOI:
10.1103/PhysRevLett.36.1249
PACS:
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