MPI für Festkörperforschung / FKF Publikationen 2002 |
|The role of the exchange coupling and applied field strength in the magneto-optical effects of magnetic insulators|
|Authors:||Yang, J. H.; Zhang, F.; Xu, Y.; Guillot, M.|
|Date of Publication (YYYY-MM-DD):||2002|
|Title of Journal:||Journal of Applied Physics|
|Issue / Number:||10|
|Abstract / Description:||A theoretical investigation on the role of some microscopic
parameters in the Faraday rotation (Fr) in paramagnetic and
ferrimagnetic insulators is presented. Fr scales linearly with
the exchange interaction and applied magnetic field H in a wide
range. However, the Fr magnitude approaches saturation and then
decreases as the exchange interaction continues to increase.
The distinction between the spontaneous Fr and H-induced Fr is
explained. The interesting difference between the dependency of
Fr in 3d metals on the spin-orbit (SO) coupling strength and
the similar dependency in rare earth (RE) compounds is studied.
It is related to the relatively weak crystal field and exchange
interaction and the relatively strong SO coupling in the RE
compounds compared with the 3d metals. (C) 2002 American
Institute of Physics.
|External Publication Status:||published|
|Communicated by:||Michaela Asen-Palmer|
|Affiliations:||MPI für Festkörperforschung|
|External Affiliations:||; Luoyang Teachers Coll, Dept Phys, Luoyang 471022, Peoples R China
; China Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China
; CNRS MPI, Lab Champs Magnet Intenses, F-38042 Grenoble, France
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