A study of the phase transition behaviour of [(NH4)0.63Li0.37]2TeBr6
作者： R Karray , D Linda , A Van Der Lee , A Ben Salah , A Kabadou
DOI: 10.1088/1757-899X/28/1/012044
关键词:
摘要: The mixed hexabromotellurate [(NH4)0.63Li0.37]2TeBr6, presenting at room temperature a K2PtCl6-type structure with space group Fm m, exhibits three anomalies 195, 395 and 498 K in the differential scanning calorimetry diagram. Different techniques: dielectric investigation, High-temperature X-ray powder diffraction infrared spectroscopic study, range (300-470) are applied to explore phase transition around K. Combining XRD, (DSC) results, no leading super-ionic conductivity is found. At high temperature, [(NH4)0.63Li0.37]2TeBr6 characterized by medium σ453≈ 10−4 Ω−1m−1.
harvard.edu
sci-hub.st 参考文章(10)
R KARRAY, A KABADOU, S JARRAYA, A BENSALAH, Super-protonic phase transition and fast ionic conductivity of Li+ in [Li0.2(NH4)0.8]2TeCl6 Solid State Ionics. ,vol. 177, pp. 89- 93 ,(2006) , 10.1016/J.SSI.2005.09.049
R. Karray, A. Kabadou, M. Loukil, A. Ben Salah, Crystal structure of lithium ammonium hexachlorotellurate(IV), [Li0.2(NH4)0.8]2TeCl6 Zeitschrift Fur Kristallographie-new Crystal Structures. ,vol. 218, pp. 399- 400 ,(2003) , 10.1524/NCRS.2003.218.4.399
R. Karray, A. Kabadou, A. Ben Salah, A. van der Lee, X-ray powder diffraction study of cesium ammonium hexachlorotellurate [Cs0.86(NH4)0.14]2TeCl6 Powder Diffraction. ,vol. 21, pp. 225- 228 ,(2006) , 10.1154/1.2246230
B CHOWDARI, R GOPALAKRISHNAN, ac conductivity analysis of glassy silver iodomolybdate system Solid State Ionics. ,vol. 23, pp. 225- 233 ,(1987) , 10.1016/0167-2738(87)90055-5
D. Louër, M. Louër, Méthode d'essais et erreurs pour l'indexation automatique des diagrammes de poudre Journal of Applied Crystallography. ,vol. 5, pp. 271- 275 ,(1972) , 10.1107/S0021889872009483
Ali Boultif, Daniel Louër, Powder pattern indexing with the dichotomy method Journal of Applied Crystallography. ,vol. 37, pp. 724- 731 ,(2004) , 10.1107/S0021889804014876
H. K. Patel, S. W. Martin, Fast ionic conduction in Na2S+B2S3 glasses: Compositional contributions to nonexponentiality in conductivity relaxation in the extreme low-alkali-metal limit. Physical Review B. ,vol. 45, pp. 10292- 10300 ,(1992) , 10.1103/PHYSREVB.45.10292
F. S. Howell, R. A. Bose, P. B. Macedo, C. T. Moynihan, Electrical relaxation in a glass-forming molten salt The Journal of Physical Chemistry. ,vol. 78, pp. 639- 648 ,(1974) , 10.1021/J100599A016
R. Karray, A. Kabadou, I. Ciśařová, R.Ben Hassen, A.Ben Salah, Structure of rubidium–ammonium hexachlorotellurate [Rb0.8(NH4)0.2]2TeCl6 at room and low temperatures Journal of Alloys and Compounds. ,vol. 377, pp. 85- 90 ,(2004) , 10.1016/J.JALLCOM.2004.01.032
H. Belgaroui, M. Loukil, R. Karray, A. Ben Salah, A. Kabadou, Structure and Characterization of the [Rbx (NH4)1-x]2TeCl6 Tellurate Family at Room Temperature Journal of Structural Chemistry. ,vol. 51, pp. 689- 695 ,(2010) , 10.1007/S10947-010-0101-4