Title :
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
fDate :
9/1/1992 12:00:00 AM
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, V543.5 may 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;
Journal_Title :
Magnetics, IEEE Transactions on
