Magnetic and magneto-optical properties of EuGaG single crystals

Author

Ostoréro, J. ; Escorne, M.

Author_Institution

Lab. de Chimie Metall. des Terres Rares, CNRS, Meudon, France

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

3240

Lastpage

3242

Abstract

Faraday rotation (FR) measurements were made on single crystals of europium-gallium-garnet (EuGaG) at 1152, 632.8, and 543.5 nm in a magnetic field up to 20 kOe applied parallel to the three main crystallographic directions in the 5-540 K temperature range. For the three wavelengths, the FR is proportional to the magnetic field and the Verdet constant V shows no anisotropy, even at low temperatures, within the experimental accuracy. The experimental Verdet constants are compared to different models for paramagnetic compounds. In the visible range of the spectrum, V_543.5may be slightly affected by the proximity of Eu³⁺ transitions. Magnetic susceptibility (χ) measurements are reported on the same samples in similar H-T conditions. The paramagnetic behaviors of χ and V are compared as a function of temperature and wavelength

Keywords

Faraday effect; europium compounds; garnets; magnetic susceptibility; paramagnetic properties of substances; 5 to 540 K; 543.5 to 1152 nm; Eu₃Ga₅O₁₂; Faraday rotation; Verdet constant; crystallographic directions; garnets; magnetic field; magnetic properties; magneto-optical properties; paramagnetic compounds; temperature range; wavelengths; Crystallography; Crystals; Magnetic anisotropy; Magnetic field measurement; Magnetic properties; Paramagnetic materials; Perpendicular magnetic anisotropy; Rotation measurement; Temperature; Wavelength measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179771

Filename

179771