| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-963 - C8-964 | |
| DOI | https://doi.org/10.1051/jphyscol:19888440 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-963-C8-964
DOI: 10.1051/jphyscol:19888440
1 Istituto di Elettronica dello Stato Solido del CNR, Via Cineto Romano 42, I-00156 Roma, Italy
2 Physico-Technical Institute, Academy of Sciences, 194021 Leningrad, U.S.S.R.
3 Dip. Ingegneria Meccanica, II Università di Roma, Via O. Raimondo, I-00173 Roma, Italy
4 Ist. del Biennio, Facoltà di Ingegneria, Università di Reggio Calabria, Via E. Cuzzocrea 48, I-89188 Reggio Calabria, Italy
J. Phys. Colloques 49 (1988) C8-963-C8-964
DOI: 10.1051/jphyscol:19888440
MAGNETO-OPTICAL INVESTIGATION OF ELECTRON TRANSITIONS IN Ga, In AND Sc SUBSTITUTED YIG
P. A. Markovin1, 2, P. Paroli1, 3, R. V. Pisarev2 et A. Tucciarone1, 41 Istituto di Elettronica dello Stato Solido del CNR, Via Cineto Romano 42, I-00156 Roma, Italy
2 Physico-Technical Institute, Academy of Sciences, 194021 Leningrad, U.S.S.R.
3 Dip. Ingegneria Meccanica, II Università di Roma, Via O. Raimondo, I-00173 Roma, Italy
4 Ist. del Biennio, Facoltà di Ingegneria, Università di Reggio Calabria, Via E. Cuzzocrea 48, I-89188 Reggio Calabria, Italy
Abstract
Magnetic circular dichroism (MCD) of Y3Fe5-xMxO12 (where M is a diamagnetic ion) is investigated as a function of x, in the spectral range 8 000 to 20 100 cm-1. A sharp decrease is found for 0.8 ≤ x ≤ 1.0, which depends on substituent-ion site occupancy and on site-assignement of the electron transitions. This effect is illustrated in detail in the case of Ga substitution, and explained in the framework of the concepts of sublattice magnetization contributions to MCD and sublattice magnetization behaviour in randomly diluted iron garnets.