J. Phys. IV France 07 (1997) C1-709-C1-710
Magnetooptics in Charge Uncompensated Garnet CaxY3-xFe5O12M. Kucera1, P. Beránková1, M.Jr. Matyás1, M. Marysko2 and K. Nitsch2
1 Institute of Physics, Charles University, Ke Karlovu 5, 12116 Prague 2, Czech Republic
2 Institute of Physics, AS CR, Cukrovarnická 10, 16200 Prague 6, Czech Republic
The properties of compensating centres in Ca2+ substituted yttrium iron garnet CaxY3-xFe5O12, 0≤ x ≤ 0.39 have been investigated using magnetooptical spectroscopy and magnetization measurements. The Faraday rotation and MCD were measured in the spectral range from 0.5 to 2.5 eV and at temperatures from 6 to 380 K. Different centres were detected and the effects of their localization at low temperatures are discussed.
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