Structure and thermal behaviour of Sr-doped (NH4)2TeBr6 material

Loukil, M.; Salah, A. Ben; Kabadou, A.

doi:10.1016/j.jallcom.2009.08.088

Cited by 9 publications

(4 citation statements)

References 10 publications

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“…Fig. 7 illustrates the temperature dependence of the dielectric constant (e 0 ) in the frequency range [1][2][3][4][5][6][7][8][9][10] and in the temperature region 300-400 K for [Li 0.08 (NH 4 ) 0.92 ] 2 TeCl 4 Br 2 . These curves exhibit:…”

Section: Evolution Of Raman Spectra With Temperaturementioning

confidence: 99%

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Structural, vibrational and dielectric properties of the new Li-doped material [Li0.08(NH4)0.92]2TeCl4Br2

Aribia¹,

Abdelmouleh²,

Karray³

et al. 2011

Journal of Molecular Structure

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Section: Evolution Of Raman Spectra With Temperaturementioning

confidence: 99%

“…This work is a part of our systematic physico-chemical investigation of the quasiternary halide systems AX-A 0 X-TeX 4 (where A or A 0 : Li, Rb, Cs, NH 4 ; X: Br, Cl) [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Structural, vibrational and dielectric properties of the new Li-doped material [Li0.08(NH4)0.92]2TeCl4Br2

Aribia¹,

Abdelmouleh²,

Karray³

et al. 2011

Journal of Molecular Structure

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“…They have been attracting considerable attention because of their potential applications in optical modulation and scanning devices. 5 For compounds A 2 TeBr 6 (with A = K, NH 4 , Rb, Cs) [6][7][8] the high-temperature phases show the cubic K 2 PtCl 6 type structure. Lowering the temperature, second order phase transitions can be observed, especially when the anions are comparatively large.…”

Section: Introductionmentioning

confidence: 99%

Structural, thermal behaviour and vibrational study of a new mixed cesium–ammonium tellurate

et al. 2012

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Synthesis, crystal structure, thermal characterization, FTIR and Raman measurements are given for a new mixed compound cesium-ammonium tellurate. X-ray study showed that the [Cs 0.92 (NH 4) 0.08 ] 2 TeCl 4 Br 2 compound crystallizes in the tetragonal space group P4/mnc, with a = 7.452 (1) Å, c = 10.544 (3) Å and Z = 2. The refinement converged at room temperature to R p = 0.093 and R wp = 0.076. The structure is considered as isolated octahedral TeCl 4 Br 2− 2. These anions show a 4 • rotation around the fourfold axis against the cubic arrangement of the K 2 PtCI 6 type structure. The monovalent cations (Cs + /NH + 4) are located between the octahedra ensuring the stability of the structure by ionic and hydrogen bonding contacts: Cs...Cl/Br and N-H.. .. .. Cl/Br. A DTA/TGA experiment at high temperature reveals one endothermic peak at 780 K for this compound. At low temperature a transition from phase I to phase II was detected at 213 K by DSC. This transition, confirmed by Raman analysis, can be attributed to an order-disorder phase transition.

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“…They have been attracting considerable attention because of their potential applications in optical modulation and scanning devices [9].…”

Section: Introductionmentioning

confidence: 99%

The effect of the combined substitution of NH4+ and Cl− on the structure of [Cs0.8(NH4)0.2]2TeBr5.6Cl0.4 powder

Belgaroui

Loukil

Karray

et al. 2010

Journal of Alloys and Compounds

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Structure and thermal behaviour of Sr-doped (NH4)2TeBr6 material

Cited by 9 publications

References 10 publications

Structural, vibrational and dielectric properties of the new Li-doped material [Li0.08(NH4)0.92]2TeCl4Br2

Structural, vibrational and dielectric properties of the new Li-doped material [Li0.08(NH4)0.92]2TeCl4Br2

Structural, thermal behaviour and vibrational study of a new mixed cesium–ammonium tellurate

The effect of the combined substitution of NH4+ and Cl− on the structure of [Cs0.8(NH4)0.2]2TeBr5.6Cl0.4 powder

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