TY  - JOUR
AU  - Cajkovski, T
AU  - Davidović, Miloš D.
AU  - Pissis, P
AU  - Polizos, G
AU  - Cajkovski, D
AU  - Likar-Smiljanic, V
AU  - Sredic, S
AU  - Mioč, Ubavka B.
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6548
AB  - Aluminum-pillared montmorillonite (PILC MM) was doped with 12-tungstophosphoric acid hexahydrate (WPA-6) by the Solgel method. Using broad band dielectric relaxation spectroscopy (DRS), electrical properties of the obtained material were investigated. Thermally stimulated depolarization current technique was also used due to its high sensitivity and high resolving power. It has been established that pillared montmorillonite doped with WPA-6 (H3PW12O40 center dot 6H(2)O) shows conductivity higher than that of the pure components. Phase transition, which in WPA-6 takes place above 50 degrees C, in doped montmorillonite occurs above 70 degrees C. The conductivity activation energy is 0.27 eV. (c) 2005 Elsevier B.V. All rights reserved.
T2  - Journal of Non-crystalline Solids
T1  - Dielectric relaxation spectroscopy of montmorillonite doped with 12-tungstophosphoric acid
VL  - 351
IS  - 33-36
SP  - 2842
EP  - 2848
DO  - 10.1016/j.jnoncrysol.2005.05.032
ER  - 

@article{
author = "Cajkovski, T and Davidović, Miloš D. and Pissis, P and Polizos, G and Cajkovski, D and Likar-Smiljanic, V and Sredic, S and Mioč, Ubavka B.",
year = "2005",
abstract = "Aluminum-pillared montmorillonite (PILC MM) was doped with 12-tungstophosphoric acid hexahydrate (WPA-6) by the Solgel method. Using broad band dielectric relaxation spectroscopy (DRS), electrical properties of the obtained material were investigated. Thermally stimulated depolarization current technique was also used due to its high sensitivity and high resolving power. It has been established that pillared montmorillonite doped with WPA-6 (H3PW12O40 center dot 6H(2)O) shows conductivity higher than that of the pure components. Phase transition, which in WPA-6 takes place above 50 degrees C, in doped montmorillonite occurs above 70 degrees C. The conductivity activation energy is 0.27 eV. (c) 2005 Elsevier B.V. All rights reserved.",
journal = "Journal of Non-crystalline Solids",
title = "Dielectric relaxation spectroscopy of montmorillonite doped with 12-tungstophosphoric acid",
volume = "351",
number = "33-36",
pages = "2842-2848",
doi = "10.1016/j.jnoncrysol.2005.05.032"
}

Cajkovski, T., Davidović, M. D., Pissis, P., Polizos, G., Cajkovski, D., Likar-Smiljanic, V., Sredic, S.,& Mioč, U. B.. (2005). Dielectric relaxation spectroscopy of montmorillonite doped with 12-tungstophosphoric acid. in Journal of Non-crystalline Solids, 351(33-36), 2842-2848.
https://doi.org/10.1016/j.jnoncrysol.2005.05.032

Cajkovski T, Davidović MD, Pissis P, Polizos G, Cajkovski D, Likar-Smiljanic V, Sredic S, Mioč UB. Dielectric relaxation spectroscopy of montmorillonite doped with 12-tungstophosphoric acid. in Journal of Non-crystalline Solids. 2005;351(33-36):2842-2848.
doi:10.1016/j.jnoncrysol.2005.05.032 .

Cajkovski, T, Davidović, Miloš D., Pissis, P, Polizos, G, Cajkovski, D, Likar-Smiljanic, V, Sredic, S, Mioč, Ubavka B., "Dielectric relaxation spectroscopy of montmorillonite doped with 12-tungstophosphoric acid" in Journal of Non-crystalline Solids, 351, no. 33-36 (2005):2842-2848,
https://doi.org/10.1016/j.jnoncrysol.2005.05.032 . .

TY  - JOUR
AU  - Cajkovski, T
AU  - Davidović, Miloš D.
AU  - Pissis, P
AU  - Polizos, G
AU  - Cajkovski, D
AU  - Likar-Smiljanic, V
AU  - Biljic, R
AU  - Nedić, Zoran
AU  - Mioč, Ubavka B.
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6383
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 epsilon*, 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. (C) 2003 Elsevier B.V. All rights reserved.
T2  - Solid State Ionics
T1  - Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate
VL  - 162
SP  - 203
EP  - 208
DO  - 10.1016/S0167-2738(03)00233-9
ER  - 

@article{
author = "Cajkovski, T and Davidović, Miloš D. and Pissis, P and Polizos, G and Cajkovski, D and Likar-Smiljanic, V and Biljic, R and Nedić, Zoran and Mioč, Ubavka B.",
year = "2003",
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 epsilon*, 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. (C) 2003 Elsevier B.V. All rights reserved.",
journal = "Solid State Ionics",
title = "Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate",
volume = "162",
pages = "203-208",
doi = "10.1016/S0167-2738(03)00233-9"
}

Cajkovski, T., Davidović, M. D., Pissis, P., Polizos, G., Cajkovski, D., Likar-Smiljanic, V., Biljic, R., Nedić, Z.,& Mioč, U. B.. (2003). Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate. in Solid State Ionics, 162, 203-208.
https://doi.org/10.1016/S0167-2738(03)00233-9

Cajkovski T, Davidović MD, Pissis P, Polizos G, Cajkovski D, Likar-Smiljanic V, Biljic R, Nedić Z, Mioč UB. Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate. in Solid State Ionics. 2003;162:203-208.
doi:10.1016/S0167-2738(03)00233-9 .

Cajkovski, T, Davidović, Miloš D., Pissis, P, Polizos, G, Cajkovski, D, Likar-Smiljanic, V, Biljic, R, Nedić, Zoran, Mioč, Ubavka B., "Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate" in Solid State Ionics, 162 (2003):203-208,
https://doi.org/10.1016/S0167-2738(03)00233-9 . .