In-depthstudy of the Chromite Compound LaNdSrAgCrO3 Structure, Dielectricity, Magnetic and Technological Application RecentAdvances

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Issaoui H., Brahmi M., Issaoui F., dhahri E., Costa B. F., Nogueira B. A., ...Daha Fazla

Journal of Superconductivity and Novel Magnetism, cilt.39, sa.5, 2026 (SCI-Expanded, Scopus)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 39 Sayı: 5
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1007/s10948-026-07250-4
  • Dergi Adı: Journal of Superconductivity and Novel Magnetism
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
  • Anahtar Kelimeler: Activation energies, Dielectric, Ferromagnetic, Ordering, Sol gel
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • İstanbul Kültür Üniversitesi Adresli: Evet

Özet

This work investigates the structural, magnetic, electrical, and dielectric properties of the multi-element A-site substituted perovskite La₀.₅₇Nd₀.₁₀Sr₀.₁₈Ag₀.₁₅CrO₃ (LNSACrO) synthesized by the sol–gel method. X-ray diffraction and Rietveld refinement confirm a rhombohedral structure with the R-3c space group. Raman and SEM analyses reveal lattice distortion and a polycrystalline microstructure. Magnetic measurements performed under 0.05 T show a complex magnetic behavior, with an antiferromagnetic transition at TN = 12 K and a ferromagnetic–paramagnetic transition at TC = 275 K, highlighting the influence of multi-cation A-site substitution on the magnetic ordering. Electrical measurements reveal thermally activated conduction with an activation energy of 0.280 eV, while the temperature dependence of the Jonscher exponent indicates a correlated barrier hopping (CBH) mechanism. Impedance analysis confirms non-Debye relaxation and distinct grain and grain-boundary contributions. These results demonstrate the strong coupling between A-site chemical disorder and the magnetic and electrical properties of LNSACrO, highlighting its potential for multifunctional magneto-dielectric and electronic applications.