Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate

T. Čajkovski; M. Davidović; P. Pissis; G. Polizos; D. Čajkovski; V. Likar-Smiljanić; R. Biljić; Z. Nedić; U. B. Mioč

doi:10.1016/S0167-2738(03)00233-9

Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate

T. Čajkovski, M. Davidović, P. Pissis, G. Polizos, D. Čajkovski, V. Likar-Smiljanić, R. Biljić, Z. Nedić, U. B. Mioč

Research output: Contribution to journal › Conference article › peer-review

12 Scopus citations

Abstract

The electrical and dielectric properties of the copper salt of 12-tungstophosphoric acid (WPA) hydrate have been investigated by broadband dielectric relaxation spectroscopy (DRS). This work is a continuation of our previous investigations on the influence of monovalent and bivalent cations on the dielectric properties of WPA hydrates salts. Measurements were made in the frequency range 10 mHz-1 MHz in order to explore the long-range dynamics, following recent microwave measurements aiming at the local dynamics properties. Experiments were done in the temperature interval 293-350 K. Data treatment included complex permittivity ε*, complex electric modulus M* and complex impedance Z* formalism, Arrhenius diagram and Cole-Cole diagrams. The results are discussed in terms of conductivity relaxation and conductivity current relaxation. Rather long conductivity relaxation times measured seem to correspond to ion jumping processes. A phase transition was observed at 323 K.

Original language	English
Pages (from-to)	203-208
Number of pages	6
Journal	Solid State Ionics
Volume	162-163
DOIs	https://doi.org/10.1016/S0167-2738(03)00233-9
State	Published - Sep 2003
Externally published	Yes
Event	11th Cpnference on Solid (SSPC11) - Guildford, United Kingdom Duration: Aug 27 2002 → Aug 30 2002

Funding

This work has been partly supported by the Ministry for Science and Technology of the Republic of Serbia, grant no. 1962, and by the Greek Ministry of Development, General Secretariat of Research and Technology. The authors wish to thank Prof. A. Djordjević for valuable suggestions and discussions and Mrs. M. Marinović-Cincović for performing TGA measurements.

Funders	Funder number
Greek Ministry of Development
General Secretariat for Research and Technology
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja	1962

Keywords

Heteropolyacid salts
Permittivity measurements
Protonic conductivity

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10.1016/S0167-2738(03)00233-9

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title = "Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate",

abstract = "The electrical and dielectric properties of the copper salt of 12-tungstophosphoric acid (WPA) hydrate have been investigated by broadband dielectric relaxation spectroscopy (DRS). This work is a continuation of our previous investigations on the influence of monovalent and bivalent cations on the dielectric properties of WPA hydrates salts. Measurements were made in the frequency range 10 mHz-1 MHz in order to explore the long-range dynamics, following recent microwave measurements aiming at the local dynamics properties. Experiments were done in the temperature interval 293-350 K. Data treatment included complex permittivity ε*, complex electric modulus M* and complex impedance Z* formalism, Arrhenius diagram and Cole-Cole diagrams. The results are discussed in terms of conductivity relaxation and conductivity current relaxation. Rather long conductivity relaxation times measured seem to correspond to ion jumping processes. A phase transition was observed at 323 K.",

keywords = "Heteropolyacid salts, Permittivity measurements, Protonic conductivity",

author = "T. {\v C}ajkovski and M. Davidovi{\'c} and P. Pissis and G. Polizos and D. {\v C}ajkovski and V. Likar-Smiljani{\'c} and R. Bilji{\'c} and Z. Nedi{\'c} and Mio{\v c}, {U. B.}",

year = "2003",

month = sep,

doi = "10.1016/S0167-2738(03)00233-9",

language = "English",

volume = "162-163",

pages = "203--208",

journal = "Solid State Ionics",

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T1 - Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate

AU - Čajkovski, T.

AU - Davidović, M.

AU - Pissis, P.

AU - Polizos, G.

AU - Čajkovski, D.

AU - Likar-Smiljanić, V.

AU - Biljić, R.

AU - Nedić, Z.

AU - Mioč, U. B.

PY - 2003/9

Y1 - 2003/9

N2 - The electrical and dielectric properties of the copper salt of 12-tungstophosphoric acid (WPA) hydrate have been investigated by broadband dielectric relaxation spectroscopy (DRS). This work is a continuation of our previous investigations on the influence of monovalent and bivalent cations on the dielectric properties of WPA hydrates salts. Measurements were made in the frequency range 10 mHz-1 MHz in order to explore the long-range dynamics, following recent microwave measurements aiming at the local dynamics properties. Experiments were done in the temperature interval 293-350 K. Data treatment included complex permittivity ε*, complex electric modulus M* and complex impedance Z* formalism, Arrhenius diagram and Cole-Cole diagrams. The results are discussed in terms of conductivity relaxation and conductivity current relaxation. Rather long conductivity relaxation times measured seem to correspond to ion jumping processes. A phase transition was observed at 323 K.

AB - The electrical and dielectric properties of the copper salt of 12-tungstophosphoric acid (WPA) hydrate have been investigated by broadband dielectric relaxation spectroscopy (DRS). This work is a continuation of our previous investigations on the influence of monovalent and bivalent cations on the dielectric properties of WPA hydrates salts. Measurements were made in the frequency range 10 mHz-1 MHz in order to explore the long-range dynamics, following recent microwave measurements aiming at the local dynamics properties. Experiments were done in the temperature interval 293-350 K. Data treatment included complex permittivity ε*, complex electric modulus M* and complex impedance Z* formalism, Arrhenius diagram and Cole-Cole diagrams. The results are discussed in terms of conductivity relaxation and conductivity current relaxation. Rather long conductivity relaxation times measured seem to correspond to ion jumping processes. A phase transition was observed at 323 K.

KW - Heteropolyacid salts

KW - Permittivity measurements

KW - Protonic conductivity

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U2 - 10.1016/S0167-2738(03)00233-9

DO - 10.1016/S0167-2738(03)00233-9

M3 - Conference article

AN - SCOPUS:0141620280

SN - 0167-2738

VL - 162-163

SP - 203

EP - 208

JO - Solid State Ionics

JF - Solid State Ionics

T2 - 11th Cpnference on Solid (SSPC11)

Y2 - 27 August 2002 through 30 August 2002

ER -

Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate

Abstract

Funding

Keywords

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