Faraday rotations of quaternary diluted magnetic semiconductors Cd/sub 1-x-y/Mn/sub x/Hg/sub y/Te crystals

The Faraday rotation of the Hg doped Cd/sub 1-x-y/Mn/sub x/Hg/sub y/Te (x/spl sim/0.37, 0.01/spl les/y/spl les/0.09), and discuss the effect of the Hg concentration on the magneto-optical properties of Cd/sub 1-x/Mn/sub x/Te. TheCd/sub 1-x-y/Mn/sub x/Hg/sub y/Te single crystals were grown by double furnace of the vertical Bridgman method. Faraday rotation as a function of photon energy was measured using a monochromator, with a tungsten-halogen lamp as a light source. The Verdet constants as a function of photon energy and Hg concentration was determined separately. It was found that the Verdet constants are enhanced as the photon energy increases near to that of the fundamental band gap. The Verdet constant was found to decrease as the Hg concentration decreases.