Raman scattering and x-ray diffraction study of a phase transition in (ND4)(2)TeBr6

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	Raman scattering and x-ray diffraction study of a phase transition in (ND4)(2)TeBr6
	J. R. Shi; Y. C. Xu; B. Arnscheidt; J. Pelzl; X. Wu
	1996
发表期刊	Journal of Raman Spectroscopy
ISSN	0377-0486
卷号	27 期号:9 页码:691-694
摘要	Raman spectra of (ND4)(2)TeBr6 were recorded in the temperature range 5-300 K, A continuous minimum of the Raman shift and a continuous maximum of the linewidth of the A(1g) mode of the TeBr62- octahedron were observed at T-c = 68 K. Also, the T-2g mode of the TeBr62- octahedron continuously split into two lines below T-c. X-ray diffraction measurements at 10 K indicate that the low-temperature phase has a primitive tetragonal structure, and an antiferro-rotation of the TeBr62- octahedra is associated with the transition. This behaviour indicates a displacive phase transition at T-c.
部门归属	ruhr univ bochum,ag festkorperspekt,inst expt phys 3,d-44780 bochum,germany. ccast,world lab,ctr theoret phys,beijing 100080,peoples r china. acad sinica,int ctr mat phys,shenyang 110015,peoples r china. tongji univ,pohl inst solid state phys,shanghai 200092,peoples r china.;shi, jr (reprint author), tongji univ,pohl inst solid state phys,shanghai 200092,peoples r china
关键词	Ammonium Hexachlorotellurate Thermodynamic Properties Deuterated (Nh4)2tecl6 Heat-capacity Temperatures
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38394
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. R. Shi,Y. C. Xu,B. Arnscheidt,et al. Raman scattering and x-ray diffraction study of a phase transition in (ND4)(2)TeBr6[J]. Journal of Raman Spectroscopy,1996,27(9):691-694.
APA	J. R. Shi,Y. C. Xu,B. Arnscheidt,J. Pelzl,&X. Wu.(1996).Raman scattering and x-ray diffraction study of a phase transition in (ND4)(2)TeBr6.Journal of Raman Spectroscopy,27(9),691-694.
MLA	J. R. Shi,et al."Raman scattering and x-ray diffraction study of a phase transition in (ND4)(2)TeBr6".Journal of Raman Spectroscopy 27.9(1996):691-694.