| 摘要 |
A magneto-optical device the composition of whose material is expressed by (Cd1-x-yMnxHgy)1Te1 (0 < x < 1, 0 < y < 1) and which can be used in regions in the vicinities of 0.98 mu m, 1.017 mu m, 1.047 mu m and 1.064 mu m wavelength. The device comprises a single crystal having the composition defined by four points a, b, c and d of Mn0.5Hg0.5Te, Mn0.6Hg0.4Te, Cd0.83Mn0.13Hg0.04Te and Cd0.83 Mn0.05Hg0.12Te in the pseudo-ternary phase diagram of MnTe-HgTe-CdTe, having a thickness of at least 300 mu m and not substantially containing twins and composition segregation. The device is produced by melting the starting materials in which Te is blended in excess in a proportion of 0.001 to 0.1 with respect to the target composition, at a pressure corresponding to the vapour pressure of Hg, quenching and solidifying the molten materials to obtain a polycrystalline body and growing a single crystal by a solid phase reaction in an atmosphere of a temperature lower than the phase transformation point of the polycrystalline body at a pressure corresponding to the vapor pressure of Hg. <IMAGE> |
