Electrical Properties of Sr2InV3O11
T. Grońa, E. Filipek b, A. Pacześna b, P. Urbanowicz a, B. Sawicki a, H. Duda a
aUniversity of Silesia, Institute of Physics, Uniwersytecka 4, 40-007 Katowice, Poland
bWest Pomeranian University of Technology Szczecin, Faculty of Chemical Technology and Engineering, Department of Inorganic and Analytical Chemistry, al. Piastów 42, 71-065 Szczecin, Poland
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The electrical conductivity σ(T) and thermoelectric power S(T) measurements of Sr2InV3O11 showed the insulating state and the change of sign of thermopower from p to n at Tn-p=400 K. The I-V characteristics provided the evidence of symmetrical and non-linear behaviour typical of strong emission of charge carriers induced by temperature and voltage. Relative dielectric permittivity εr as well as loss tangent (tan δ) strongly depend both on the temperature in the range of 295-400 K and the frequency in the range of 5×102 to 1×106 Hz, showing the broad maximum at 320 K. These effects are considered as a relaxation process like in the Maxwell-Wagner or Jonscher model as well as the conduction of electric current, as determined by the Joule-Lenz law.

DOI: 10.12693/APhysPolA.130.1239
PACS numbers: 72.20.Pa, 72.80.Ga, 75.20.-g