Author
A. Mary Sukeshini
Bio: A. Mary Sukeshini is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Conductivity & Tetragonal crystal system. The author has an hindex of 2, co-authored 4 publications receiving 12 citations.
Papers
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TL;DR: In this article, X-ray diffraction data has revealed the presence of AgI and Differential Scanning Calorimetry has confirmed this by the existence of an endothermic peak characteristic of the superionic transition at 150°C.
6 citations
TL;DR: In this paper, powder X-ray diffraction, differential scanning calorimetry (DSC), and electrical conductivity were used to characterize Ag2Hgl4-Cu2HgI4 systems.
3 citations
TL;DR: In this article, the lattice parameters of the solid electrolyte Ag x Cu 2− x HgI 4 have been determined for the different values of x between 0 and 2.
2 citations
1 citations
Cited by
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TL;DR: In this article, the ionic conductivity properties of these materials using the complex impedance method, the measurements were made in the frequency range 10 MHz-1 Hz. The activation energies calculated were E a (NVP)= 0.49 eV and E a(RVP)=0.85 eV.
35 citations
TL;DR: In this paper, the synthesis, structure and conductivity study of the new monovalent phosphates of the formula Na 2 MTi(PO 4 ) 3, M=Fe or Cr.
34 citations
TL;DR: In this article, the authors investigated the superionic transition in Ag2 HgI4 and Cu2 HghI4 using temper dependent powder neutron diffraction and impedance spectroscopy techniques.
Abstract: The nature of the superionic transition in Ag2 HgI4 and Cu2 HgI4 has been investigated using temper dependent powder neutron diffraction and impedance spectroscopy techniques. In the case of Ag2 HgI4 , the superionic transition occurs at Tc = 326(2) K and is accompanied by a 50-fold increase in the ionic conductivity. In the Cu+ analogue, which has a lower conductivity for a given temperature, the corresponding values are Tc = 338(4) K and / ~ 6. The ambient temperature crystal structures of the two compounds are different (space group I for -Ag2 HgI4 and I 2m for -Cu2 HgI4 ) but, in contrast to the most recent study, the high temperature polymorphs are found to be isostructural (space group F 3m ). Possible explanations for the different behaviour of the ionic conductivity of the two compounds are given.
28 citations
TL;DR: In this article, the formation of composite solid electrolyte materials comprising glassy and crystalline phases has been identified by means of X-ray diffraction analysis and Fourier transform infrared spectroscopic studies have confirmed the presence of VO43− and V2O74− groups in these new materials.
9 citations
TL;DR: In this article, the preparation of fast ionic solids in the ternary system (CdI 2 ) c [(Ag 2 O)(WO 3 )] 100−c (20≤c≤80) using the solid state reaction technique was discussed.
Abstract: This paper deals with the preparation of fast ionic solids in the ternary system (CdI 2 ) c [(Ag 2 O)(WO 3 )] 100−c (20≤c≤80) using the solid state reaction technique. Powder samples were characterized through X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetric (DSC) analysis and silver ionic transport number studies. These studies have revealed the existence of AgI and various phases in the different compositions of the system. The transport number measurements carried out by means of Wagner's polarization technique and EMF method have shown that silver ions may be responsible for the observed ionic transport in these newly formed solid phases.
4 citations