Title :
Faraday rotation of bismuth substituted dysprosium iron garnets
Author :
Guillot, M. ; Braik, Y. ; Le Gall, H. ; Artinian, M. ; Desvignes, J.M.
Author_Institution :
Service Nat. des Champs Intenses, CNRS, Grenoble, France
fDate :
11/1/1993 12:00:00 AM
Abstract :
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
Keywords :
Faraday effect; bismuth compounds; dysprosium compounds; ferrimagnetic properties of substances; garnets; superexchange interactions; 10 to 300 K; 1150 nm; Dy3-xBixFe5O12; Faraday rotation; first order magneto-optical coefficient; magnetic field dependence; modified superexchange interactions; single crystal garnets; spontaneous state; sublattice magnetizations; temperature dependence; Bismuth; Garnets; Iron; Magnetic anisotropy; Magnetic field measurement; Magnetostriction; Particle beam optics; Perpendicular magnetic anisotropy; Temperature dependence; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
