Anomalous frequency behavior of temperature dependent impedance spectra of the LuFe2O4 multiferroic

作者：Gamzatov A G^*; Gajiev G M; Aliev R A; Emiraslanova L L; Kaul A R; Markelova M; Yu Seong Cho

来源：Applied Physics Letters, 2018, 112(9): 092902.

DOI：10.1063/1.5019408

We have measured temperature dependent impedance spectra of LuFe2O4 multiferroic polycrystalline samples in the temperature range of 100-400 K, in a wide frequency range of measuring AC voltage: from 20 Hz to 120 MHz. In spectra measured at 30-70 MHz and at 200-260 R, we observed anomalous positive temperature coefficient of resistance. We explain the anomaly on the basis of the generalized barrier model. Published by AIP Publishing.

• 出版日期2018-2-26