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- W4200173677 abstract "Ni1-xLaxO (x = 0.00, 0.01, and 0.03) nanostructures have been synthesized by the conventional sol-gel method, and further the electrical conduction and thermal stability have been investigated. It is observed that ε′ decreases with increasing frequency and does not exhibit any significant change with temperature T < 150 °C. It attains a high value ε′ ∼103-104 (75 kHz and 300 °C) for NiO sample. The high value of ε′ in pure and LNO samples might be explained via electron relaxation–mode-coupling model, associated with oxygen vacancies (OVs) which become dominant at high temperature. The high-temperature dielectric relaxation behavior was also observed in all the samples. The calculated activation energies (Ucond and Uac) from DC and AC conductivities, revealing that the relaxation behavior associated with the migration of OVs as confirmed by the EPR spectroscopy. On the other hand, a highly doped (x = 0.03) LNO sample shows high thermal stability than pure NiO, which needs a much higher degradation temperature, i.e., above 500 °C. The thermal activation energy was also determined in the temperature range of 80–150 °C." @default.
- W4200173677 created "2021-12-31" @default.
- W4200173677 creator A5077508496 @default.
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- W4200173677 date "2022-02-01" @default.
- W4200173677 modified "2023-09-25" @default.
- W4200173677 title "Influence of La3+ ion doping on electrical conduction and thermal stability of NiO nanostructures" @default.
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- W4200173677 doi "https://doi.org/10.1016/j.matchemphys.2021.125612" @default.
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