Crystals of the compound semiconductor Cd<sub>0.55</sub>Mn<sub>0.45</sub>Te were grown by modified Bridgeman technique. The resulting crystals were transparent, with a deep red color. There were no precipitates visible up to the 1.5μm resolution of the optical transmission microscopy system used. The electrical resistivity was measured to be 1x10<sup>5</sup>Ωcm. The ability to grow large precipitate free crystals makes this system a good candidate for radiation detector elements. Electrical properties must be improved through better control of the concentration of electronically active impurities.
Large-size CZT single crystals of up to 300 cm<sup>3</sup> have been grown at Yinnel Tech. These crystals were produced into radiation detectors with excellent performances, leading to enhancements in both energy resolution and detector efficiency.