Title :
Faraday rotation of terbium-yttrium ferrite garnet
Author :
Guillot, M. ; Le Gall, H. ; Desvignes, J.M. ; Artinian, M.
Author_Institution :
CNRS, Grenoble, France
fDate :
9/1/1990 12:00:00 AM
Abstract :
The authors report Faraday rotation (FR) measurements performed on single crystals of terbium-yttrium iron garnets at 1.15-μm wavelength for three terbium contents (1.98, 1.02, and 0.35) in the temperature range 6-300 K, under magnetic field up to 20 kOe applied along the [111] and [100] directions. The spontaneous FR (associated with the spontaneous magnetization) is isotropic while the FR susceptibilities are anisotropic at low temperature; this anisotropy originates mainly from spin reorientation transitions. To analyze the terbium contribution to FR, the Fe contribution to the YIG data is evaluated. The terbium electric dipole transition coefficient is found to consist in a linear temperature dependence in the temperature range 100-300 K as previously observed in pure TbIG
Keywords :
Faraday effect; ferrimagnetic properties of substances; garnets; magnetic anisotropy; magnetic susceptibility; terbium compounds; yttrium compounds; 1.15 micron; 6 to 300 K; Faraday rotation; TbxY3-xFe5O12; TbYFe5O12; TbYIG; anisotropy; electric dipole transition coefficient; ferrite garnet; spin reorientation transitions; spontaneous magnetization; susceptibilities; Anisotropic magnetoresistance; Ferrites; Garnets; Iron; Magnetic field measurement; Performance evaluation; Rotation measurement; Temperature dependence; Temperature distribution; Wavelength measurement;
Journal_Title :
Magnetics, IEEE Transactions on
