Faraday rotation of terbium-yttrium ferrite garnet

Author

Guillot, M. ; Le Gall, H. ; Desvignes, J.M. ; Artinian, M.

Author_Institution

CNRS, Grenoble, France

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

1352

Lastpage

1354

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; Tb_xY_3-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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104373

Filename

104373