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Phase Transitions
A Multinational Journal
Volume 70, 1999 - Issue 1
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Original Articles

Dielectric, dsc and raman studies of the phase transitions in NH4(HSO4)0.45(H2PO4)0.55 mixed crystals

S. Bouattour Laboratoire de l'Etat Solide, Faculté des Sciences de Sfax, Université de sfax, Rte de Sokra, 3038, Sfax, Tunisia
,
T. Mhiri Laboratoire de l'Etat Solide, Faculté des Sciences de Sfax, Université de sfax, Rte de Sokra, 3038, Sfax, Tunisia
,
A. W. Kolsi Laboratoire de l'Etat Solide, Faculté des Sciences de Sfax, Université de sfax, Rte de Sokra, 3038, Sfax, Tunisia
&
F. Romain Laboratoire de Dynamique. Interaction, Riactivité. CNRS, 2 rue Henri Dunant, 94320, Thiais, France
Pages 19-28 | Received 06 Jul 1998, Published online: 27 Sep 2006

References

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  • Averbuch-Pouchot , M. T. 1981 . Hydrogen bonding in NH4HSO4-NH4H2PO4 . Mat. Res. Bull. , 16 : 407
  • Baur , H. 1973 . Reconstruction of local atomic environments in the disordred hydrogen-bonded crystal structures of paraelectric ammonium dihydrogen phosphate and potassium dihydrogen phosphate . Acta Cryst. , B29 : 2726
  • Belushkin , A. V. , Carlile , C. J. and Shuvalov , L. A. 1992 . The diffusion of protons in the superionic conductor CsHSO4 by quasielastic neutron scattering . J. Phys.: Condens. Matter , 4 : 389
  • Kennedv , N. S.J. and Nelmes , R. J. 1981 . Structure studies of RbH?PO4 in its Daraelectric and ferroelectric phases . J. Phys. C , 13 : 4841
  • Khemakhem , H. , Mhiri , T. , Tounsi , H. , Fakhfakh , Z. and Daoud , A. 1996 . Dielectric, optical and infrared studies of the mixed caesium-ammonium acid sulphate Cs0.9(NH4)0.1HSO4 . Phase Trans. , 56 : 61
  • Le Calve , N. , Romain , F. , Limage , M. H. and Novak , A. 1989 . Etude par spectroscopie raman et infrarouge des verres de pseudo-spin Rb0. 65(NH4)0. 35H2PO4 . J. Mol. Struct. , 200 : 131
  • Mhiri , T. , Daoud , A. , Bouachir , M. and Romain , F. 1992 . Superprotonic phase transition in mixed ammonium-caesium acid sulphate Cs0.9(NH4)0.1HSO4 . J. Alloys Comp. , 188 : 215
  • Nelmes , R. J. 1971 . Ammonium hydrogen sulfate, its structure and the ferroelectric transition . Acia Cryst. , B27 : 272
  • Novak , A. 1974 . Hydrogen bonding in solids. Correlation of spectroscopic and crystallographic data . Struct. Bonding , 18 : 177
  • Pepinsky , R. , Vedam , K. , Hoshino , S. and Okayo , Y. 1958 . Ferroelectric transition in Rubidium Bisulfate . Phys. Rev. , 111 : 1508
  • Romain , F. and Novak , A. 1991 . Raman study of the high-temperature phase transition in CsH2PO4 . J. Mol. Struct. , 263 : 69
  • Skalyo , J. Jr. , Frazer , B. C. and Shirane , G. 1969 . Pressure dependence of the transition temperature in potassium dihydrogen-orthophosphate and ammonium dihydrogen-orthophosphate . Phys. Rev. , 184 : 550
  • Toupry , N. , Poulet , H. and Le Postollec , M. 1981 . Raman study of the phase transition in RbHSO4 . Journal of Raman Spectroscopy , 11 : 81

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