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Faraday effect in gadolinium iron garnet

Conference · · IEEE Trans. Magn.; (United States)
OSTI ID:6633436
The Faraday effect (FR) is investigated experimentally in GdIG (Gd/sub 3/Fe/sub 5/O/sub 12/) single crystals; the magnetic field up to 20 kOe was applied along the (111) direction at a wavelength of 1.15 micron. The 4.2-580 K temperature range covers all the magnetic ordering domain. The Faraday rotation reciprocal susceptibility differs strongly from that observed in other heavy rare earth garnets. In the spontaneous state the results are analyzed using the model where the Fe/sup 3+/ total contribution to FR is the same as that of YIG. At very low temperatures the Gd/sup 3+/ contribution originates from magnetic dipole contribution only; in the 25-425 K temperature range the electric dipole coefficient Ce/sup s/ presents a linear temperature dependence. At the Neel point the GdIg Faraday rotation is going to zero.
Research Organization:
CNRS, Laboratoire de Magnetisme et d'Optique des Solides, 92195 Meudon
OSTI ID:
6633436
Report Number(s):
CONF-860436-
Conference Information:
Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: MAG-22:5
Country of Publication:
United States
Language:
English