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Faraday rotation of bismuth substituted dysprosium iron garnets

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5 Author(s)
Guillot, M. ; Service Nat. des Champs Intenses, CNRS, Grenoble, France ; Braik, Y. ; Le Gall, H. ; Artinian, M.
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The Faraday rotation on single crystal garnets of composition Dy 3-xBixFe5O12 with x=0.43 has been investigated in the temperature range 10 K< T<300 K at λ=1150 nm. The data are described in terms of the corresponding sublattice magnetizations assuming that the contribution of the Fe3+ ions to Faraday rotation (FR) is the same as for bismuth substituted yttrium garnet (for identical x value). The first order magnetooptical (MO) coefficient (Ce) of the Dy3+ ion is deduced; in the spontaneous state, Ce is linear temperature dependent as previously found in pure DyIG with a decrease of C e of about 30-50% induced by the presence of bismuth

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Magnetics, IEEE Transactions on  (Volume:29 ,  Issue: 6 )