Alternating current conductivity of solid and liquid phases in the tin diiodide-silver diiodide system

Wojakowska, Alina; Kundys, E.; Josiak, J.

doi:10.1007/bf01152956

Cited by 4 publications

(9 citation statements)

References 35 publications

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“…Figure 1 shows temperature dependences of σ of molten (a) (RbI) c (AgI) 1-c and (b) (RbCl) c (AgCl) 1-c mixtures, respectively. We confirmed that the present ionic conductivities of molten AgCl, AgI, RbCl and RbI are in good agreement with those of earlier works [1][2][3][4][5][6][7][8][9][30][31]. The increase of σ of AgI at a phase transition from molten phase to the superionic α-phase, is also reported by earlier works [3][4][5]7].…”

Section: Introductionsupporting

confidence: 92%

“…Ionic conductivities, σ, of silver halides at solid and molten phases have been reported by many earlier works [1][2][3][4][5][6][7][8][9][10][11]. It is well known that σ of superionic α-AgI (high temperature solid phase of AgI) is as large as that of molten salts, while σ of crystal AgBr and AgCl under the atmospheric pressure are small even at high temperature [10,11].…”

Section: Introductionmentioning

confidence: 98%

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Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Tahara

Ohno

Okada

et al. 2011

EPJ Web of Conferences

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Abstract. Ionic conductivities of molten (RbX) c (AgX) 1-c (X = Cl and I) mixtures were measured to clarify the concentration effects of silver ions on ionic conductivities of molten silver halides. It is found that the addition of RbX to molten AgX rapidly reduces the ionic conductivity with 0 ≤ c ≤ 0.4. It suggests that strong Ag-Ag correlation is necessary to fast conduction of Ag ions in molten state. The absolute values of ionic conductivity for (RbCl) c (AgCl) 1-c are larger than those for (RbI) c (AgI) 1-c mixtures at all compositions. These differences might relate to difference of diffusion constant between Cl -and I -and difference of effective charge carried by an ion between molten AgCl and AgI.

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Section: Introductionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 98%

Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Tahara

Ohno

Okada

et al. 2011

EPJ Web of Conferences

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“…Blachnik and Stöter [16] identified three compounds of compositions Ag 3 SnI 5 , AgSn 2 I 5 and AgSn 4 I 9 . These were subsequently confirmed by Wojakowski et al [17]. The first was shown to possess a very wide compositional range with the lowest temperature of its stability region (382 K) occurring at the stoichiometry Ag 3 SnI 5 .…”

Section: Introductionmentioning

confidence: 66%

“…These factors, coupled with the high cost of silver containing compounds, have seriously restricted the commercial possibilities for such compounds in, amongst others, solid state battery applications. Nevertheless, the mechanism by which chemical doping influences the structure-property relationships within AgI derivatives is of significant fundamental importance and has motivated a number of studies of Ag-rich AgI-MI 2 systems by the authors [6][7][8] and others [9][10][11][12][13][14][15][16][17]. In this paper we consider AgI-MI 2 with M = Cd 2+ , Zn 2+ , Sn 2+ , Hg 2+ and Pb 2+ , with specific emphasis on the first three.…”

Section: Introductionmentioning

confidence: 99%

Structural and superionic properties of Ag-rich ternary phases within the AgI MI₂systems

Hull

Keen

Berastegui

2002

J. Phys.: Condens. Matter

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The effects of temperature on the crystal structure and ionic conductivity of the compounds Ag 2 CdI 4 , Ag 2 ZnI 4 and Ag 3 SnI 5 have been investigated by powder diffraction and impedance spectroscopy techniques. ε-Ag 2 CdI 4 adopts a tetragonal crystal structure under ambient conditions and abrupt increases in the ionic conductivity are observed at 407(2), 447(3) and 532(4) K, consistent with the sequence of transitions ε-AgThe ambient-temperature β phase of Ag 2 ZnI 4 is orthorhombic and the structures of β-Ag 2 CdI 4 and β-Ag 2 ZnI 4 can, respectively, be considered as ordered derivatives of the wurtzite (β) and zincblende (γ ) phases of AgI. On heating Ag 2 ZnI 4 , there is a 12-fold increase in ionic conductivity at 481(1) K and a further eightfold increase at 542(3) K. These changes result from decomposition of β-Ag 2 ZnI 4 into α-AgI + ZnI 2 , followed by the appearance of superionic α-Ag 2 ZnI 4 at the higher temperature. The hexagonal crystal structure of α-Ag 2 ZnI 4 is a dynamically disordered counterpart to the β modification. Ag 3 SnI 5 is only stable at temperatures in excess of 370(3) K and possesses a relatively high ionic conductivity (σ ≈ 0.19 −1 cm −1 at 420 K) due to dynamic disorder of the Ag + and Sn 2+ within a cubic close packed I − sublattice. The implications of these findings for the wider issue of high ionic conductivity in AgI-MI 2 compounds is discussed, with reference to recently published studies of Ag 4 PbI 6 and Ag 2 HgI 4 and new data for the temperature dependence of the ionic conductivity of the latter compound.

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“…The activation energy for conduction of molten CuBr is very close to that of molten AgI 2.15 kJ mol À 1 [15,48,49]. However, the conductivity of molten AgI reaches the value of the solid phase (a-AgI) when the liquid is heated, whilst this seems to be unlikely in the case of CuBr in view of the higher drop on melting.…”

Section: Liquid Cubrmentioning

confidence: 90%

Electrical conductivity of CuBr in the temperature range 500–1050 K

Wojakowska

Krzyżak

2005

Solid State Ionics

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Alternating current conductivity of solid and liquid phases in the tin diiodide-silver diiodide system

Cited by 4 publications

References 35 publications

Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Structural and superionic properties of Ag-rich ternary phases within the AgI MI₂systems

Electrical conductivity of CuBr in the temperature range 500–1050 K

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Alternating current conductivity of solid and liquid phases in the tin diiodide-silver diiodide system

Cited by 4 publications

References 35 publications

Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Concentration Effects of Silver Ions on Ionic Conductivities of Molten Silver Halides

Structural and superionic properties of Ag -rich ternary phases within the AgI MI2systems

Electrical conductivity of CuBr in the temperature range 500–1050 K

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Structural and superionic properties of Ag-rich ternary phases within the AgI MI₂systems