Synthesis, Structural, Microscopic, and Electrical Properties Studies of Neodymium Chromite Perovskite Nanoparticles

  • Shanker J
  • Ananthaiah J
  • Kumar N
  • et al.
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Abstract

NdCrO 3 perovskite compound synthesized via sol-gel auto-combustion process. Impedance spectroscopic data have been studied in the wide frequency range (0.1 Hz −10 MHz), at various temperatures (RT-500 °C). Structural analysis has been done using Raman spectroscopy, which indicates single-phase orthorhombic structure. EDX, XPS spectrums have shown Nd, Cr, O elements in the NdCrO 3 compound, suggesting that mentioned sample is pure. The SEM and TEM analysis confirmed that the distribution of grains and particles is not uniform throughout the surface and material respectively. TEM image indicating the polycrystalline nature and particle size is in the order of 30 nm–50 nm. This material showed the giant dielectric behaviour ( ε ′ > 10 4 ). Impedance studies of NdCrO 3 perovskite exhibited a negative temperature coefficient of resistance type semiconductor behaviour. The dc conductivity and relaxation plots were followed by Arrhenius law. Frequency reliant ac conductivity plots followed Jonscher’s power law. These results suggest that NdCrO 3 is suitable for giant capacitors applications.

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Shanker, J., Ananthaiah, J., Kumar, N. P., Venkataramana, K., Raju, P., Anand pandarinath, M., … U P, U. (2022). Synthesis, Structural, Microscopic, and Electrical Properties Studies of Neodymium Chromite Perovskite Nanoparticles. ECS Journal of Solid State Science and Technology, 11(4), 043011. https://doi.org/10.1149/2162-8777/ac611b

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