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Title: Electric relaxation in Nb6VSb3O25-ceramics
Authors: Groń, Tadeusz
Filipek, E.
Piz, M.
Kukuła, Zenon
Pawlus, Sebastian
Keywords: dielectric loss and relaxation; permittivity; dielectric spectroscopy
Issue Date: 2016
Citation: Acta Physica Polonica A, Vol. 129, iss. 3, (2016), s. 355-358
Abstract: Broadband dielectric spectroscopy measurements of Nb6VSb3O25 showed that in both the real ("0) and imaginary ("00) components of permittivity there is visible relaxation process strongly obscured by dc conductivity. Application of the electric modulus representation of the data enables to study temperature evolution of this relaxation together with conductivity relaxation. It was showed that the activation energies for both processes are close. Low-frequency loss tangent increases strongly with temperature, suggesting that in the compound under study additional energy losses are associated with the conduction of electric current, as determined by the Joule-Lenz law.
DOI: 10.12693/APhysPolA.129.355
ISSN: 0587-4246
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