Theory of infrared absorption by pairs of cobalt ions in MgF2

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The microscopic mechanism responsible for the electric dipole two-magnon absorption in rutile antiferromagnets remains in some dispute. Three mechanisms have been suggested which appear to make contributions of comparable orders-of-magnitude for some materials. As a contribution to the resolution of this problem we have studied the case of two next-nearest-neighbor Co 2+ ions in a nonmagnetic rutile lattice. The results suggest some further experimental studies of the polarization properties of the observed pair absorption spectrum.

Original languageEnglish (US)
Pages (from-to)1647-1648
Number of pages2
JournalJournal of Applied Physics
Issue number4
StatePublished - 1971


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