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Magneto-Optical Spectra in Single Crystals of Cr-Te Compounds

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4 Author(s)
Y. Aman ; Tokyo Univ. of Agriculture and Technology. ; M. Hirai ; M. Murayama ; K. Sato

Optical and magneto-optical properties of single crystals of Cr2Te3 and Cr3Te4, grown by the chemical vapor transport technique, were studied. The reflectivity spectra at normal incidence of both samples were measured at room temperature, and the magneto-optical spectra of the Cr3Te4 were also measured. Spectra of the diagonal and off-diagonal elements of the conductivity tensor were obtained from the measured spectra. These were compared with estimations based on density of state curves calculated by Dijkstra, and showed reasonably good agreement. From these results it is concluded that transitions from Cr3d to the Conduction Band for majority spins and Te5p to Cr3d for minority spins, are responsible for the observed optical absorption and magneto-optical effects.

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IEEE Translation Journal on Magnetics in Japan  (Volume:5 ,  Issue: 4 )