Magneto-optical properties of scandium-substituted ytterbium iron garnet single 
crystals

Ostoréro, J.; Guillot, M.

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Magneto-optical properties of scandium-substituted ytterbium iron garnet single crystals

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Guillot, M.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Ostoréro, J., & Guillot, M. (2002). Magneto-optical properties of scandium-substituted ytterbium iron garnet single crystals. Journal of Applied Physics, 91(10), 7296-7298.

Cite as: https://hdl.handle.net/21.11116/0000-000E-E973-A

Abstract

This article deals with the investigation of temperature and
magnetic field dependencies of the Faraday rotation (Fr) in the
scandium-substituted ytterbium iron garnet Yb3Fe5-xScxO12
(x=0.5) (YbIG: Sc) single crystals regarding the contributions
from magnetic sublattices. Fr was measured at 1152 nm
wavelength in the 6 K-T-Neel temperature range under a magnetic
field up to 20 kOe applied parallel to the three principal
crystallographic directions. When T<20 K, a strong anisotropy
(larger than 30%) of Fr-spont is observed with [111]
corresponding to the "easy" axis, [100] the "hard" and [110] to
intermediate ones, respectively. It is worth noting that
contrary to other ferrimagnetic garnets, chi(F) is positive for
[111]. A strong chi(F) anisotropy is found below 20 K. Even if,
because of the Sc substitution, the magnetic compensation point
has disappeared, a magneto-optical compensation point is still
observed as in pure YbIG. Through the analysis of rare earth
contribution to Fr, the first-order electric dipole transition
coefficient of the Yb3+ ion is strongly temperature dependent
as observed also in pure YbIG. (C) 2002 American Institute of
Physics.