Фазовая диаграмма системы Gd-S

К оглавлению: Другие диаграммы (Others phase diargams)


Gd-S (Gadolinium-Sulfur) Editor [81Kam] determined the Gd-S phase diagram between GdS and Gd2S3 above 1650 C. The melting point of Gd2S3 is 1850 с 30 C [81Kam], which is in agreement with ~1885 C reported earlier by [57Fla]. The polymorphic transition temperature of Gd2S3 is 950 с 150 C [57Fla]. [67Yag] synthesized Gd3S4 at 1300 C. Because this phase was not observed at 1650 C, it must form peritectoidally at a temperature between 1300 and 1650 C. Tetragonal GdS2 was observed by [ 57Fla] and [64Rin] existing on the Gd-rich side of the stoichiometry with some homogeneity range, which is most likely the high-temperature modification of GdS2 reported later by [70Web].-H.O. 57Fla: J. Flahaut, M. Guittard, J. Loriers, and M. Patrie, Compt. Rend., 245, 2291-2293 (1957) in French. 64Rin: S.A. Ring and M. Tecotzky, Inorg. Chem., 3, 182-185 (1964). 67Yag: K. Yaguchi, J. Phys. Soc. Jpn., 22, 673-674 (1967). 68Pre: C.T. Prewitt and A.W. Sleight, Inorg. Chem., 7, 1090-1093 (1968). 70Web: A.W. Webb and H.T. Hall, Inorg. Chem., 9, 1084-1090 (1970). 81Kam: A.A. Kamarzin, K.E. Mironov, V.V. Sokolov, Yu.N. Malovitsky, and I.G. Vasil'yeva, J. Cryst. Growth., 52(2), 619-622 (1981). 1