| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-975 - C8-976 | |
| DOI | https://doi.org/10.1051/jphyscol:19888446 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-975-C8-976
DOI: 10.1051/jphyscol:19888446
1 Institute of Physics, Czechoslovak Academy of Sciences, Na Slovance 2, CS-180 40 Praha 8, Czechoslovakia
2 The Ohio State University, Columbus, OH 43210, U.S.A.
3 On leave from the Central Research Institute for Physics, Budapest, Hungary.
J. Phys. Colloques 49 (1988) C8-975-C8-976
DOI: 10.1051/jphyscol:19888446
SEARCH FOR Fe4+ IN YIG : Ca GARNET FILMS
Z. Simsa1, Simsová1, J. Zemek1, P. E. Wigen2 et M. Pardavi-Horvath2, 31 Institute of Physics, Czechoslovak Academy of Sciences, Na Slovance 2, CS-180 40 Praha 8, Czechoslovakia
2 The Ohio State University, Columbus, OH 43210, U.S.A.
3 On leave from the Central Research Institute for Physics, Budapest, Hungary.
Abstract
Spectral and temperature dependences of the Faraday rotation and X-ray photoemission spectroscopy of YIG: Ca garnet films have shown features characteristic for the presence of tetravalent iron ions in tetrahedral positions. The charge compensation of Ca2+ by Fe4+ ions becomes saturated at 0.16 Ca per formula unit suggesting the existence of O- ions at higher calcium contents.