Abstract
A large Faraday rotation is reported for Rh 4+ -substituted magnetic garnets in the near infrared wavelength region. The Faraday rotation at 0.9 μ m reaches at about seven times as large as that in YIG by substituting Rh 4+ ions of only 0.13 per formula unit at room temperature. From the electronic state calculations of a @h ' + (Rh 4+ O 6 ) 8- octahedal cluster performed by using an SCF-Unrestricted-SW X α method, the large Faraday rotation is assigned to the charge transfer transitions of an electron from O 2p to Rh 4d orbitals, or t 1 u n (2p) → t 2 s * (4d) and t 2 u n (2p) → t 2 s * (4d) transitions.
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