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Investigation of variable range hopping and dielectric relaxation in GdCrO3 orthochromite perovskites

  • 0Laboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax B.P. 1171 3000 Sfax Tunisia imen85356@gmail.com.
Rsc Advances +

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November 13, 2024

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November 13, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

GdCrO3 (GCO) exhibits semiconductor properties and giant permittivity, making it suitable for energy storage. Its conductivity increases with temperature due to charge carrier mobility and hopping mechanisms.

Area Of Science

  • Materials Science
  • Solid State Physics
  • Crystallography

Background

  • Gadolinium Chromium Oxide (GdCrO3) is a perovskite material with potential applications in electronics.
  • Understanding its structural, electrical, and dielectric properties is crucial for material development.

Purpose Of The Study

  • To comprehensively investigate the structural, electrical, and dielectric characteristics of GdCrO3 (GCO) compounds.
  • To assess the potential of GCO for energy storage applications.

Main Methods

  • X-ray diffraction (XRD) for phase and crystal structure determination.
  • Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) for morphology and microstructure analysis.
  • Electrical conductivity and dielectric spectroscopy measurements across varying temperatures and frequencies.

Main Results

  • XRD confirmed the perovskite phase with the Pbnm space group.
  • GCO displays semiconductor behavior with temperature-dependent conductivity, attributed to charge carrier mobility and hopping.
  • Dielectric analysis revealed frequency-dependent behavior, giant permittivity, and low energy loss, alongside significant dielectric losses attributed to defects.

Conclusions

  • GdCrO3 is a promising material for energy storage applications due to its dielectric properties.
  • Complex conduction mechanisms and defect states (oxygen vacancies, mixed valence) influence its electrical and dielectric behavior.
  • The material's properties suggest potential use in electronic and electrical devices requiring controlled conductivity.