Temperature- and frequency-dependent dielectric and impedance spectroscopy of double perovskite oxide BiBa0.5Ag0.5Ni2O6 electronic material

Nassar, K. Iben; Tayari, F.; Slimi, M.; Rammeh, N.; Njeh, Anouar; Teixeira, S. Soreto; Graça, M.P.F.

doi:10.1007/s10854-022-09746-w

Cited by 7 publications

(3 citation statements)

References 46 publications

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“…As temperature rises, the maximum Z″ steadily shifts to higher frequencies, signaling an amplifying loss tangent and confirming the existence of temperature-sensitive electrical relaxation phenomena. This observation aligns with findings from related studies investigating perovskites and double perovskites materials, such as Ba 0.75 Bi 0.25 Ni 0.7 Mn 0.3 O 3 [13], BiBa 0.5 Ag 0.5 Ni 2 O 6 [16], and BiBaNiNbO 6 [17], further substantiating the broader implications of our research.…”

Section: Impedance Spectroscopy Analysissupporting

confidence: 92%

“…However, subsequent studies revealed that the giant dielectric constant effects were associated with Maxwell-Wagner (MW) polarization [13]. MW polarization is commonly observed in heterogeneous systems where dielectric components possess varying conductivities, forming interfaces and barrier layers [14][15][16][17][18]. Researchers have employed impedance spectroscopy to characterize these compounds, a non-destructive technique offering simultaneous electrical and dielectric characterization of ceramic materials.…”

Section: Introductionmentioning

confidence: 99%

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Insights into dielectric and electrical conductivity dynamics in sol-gel synthesized Ba0.75Ni0.25Tc0.88Mn0.12O3 perovskite ceramic

Tayari,

Nassar,

Benamara

et al. 2024

J Sol-Gel Sci Technol

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This study presents a comprehensive investigation into the structural, morphological, and electrical properties of sol-gel synthesized Ba0.75Ni0.25Tc0.88Mn0.12O3 perovskite ceramic (BNTMO). The meticulous preparation protocol, involving solvating various precursors, was followed by an extensive characterization employing X-ray diffraction, scanning electron microscopy, and dielectric studies. XRD analysis affirmed the single-phase single-phase cubic structure with Pm-3m space, while SEM revealed a well-defined morphology with an average particle size of 243 nm. The electrical conductivity exploration, elucidated through Jonscher’s universal power law, provided insights into charge carrier dynamics, exhibiting semiconductor behavior. Impedance spectroscopy unraveled a distinctive relaxation peak, corroborated by Cole-Cole plots, unveiling a unique charge carrier mechanism. Dielectric studies showcased intriguing polarization dynamics, indicating promising applications in energy storage. The convergence of activation energy values from various analyses underscores the coherence in the charge carrier relaxation process. Overall, our findings contribute to a nuanced understanding of the electrical intricacies of BNTMO, presenting avenues for its utilization in advanced technological applications. Graphical Abstract

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Section: Impedance Spectroscopy Analysissupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Insights into dielectric and electrical conductivity dynamics in sol-gel synthesized Ba0.75Ni0.25Tc0.88Mn0.12O3 perovskite ceramic

Tayari,

Nassar,

Benamara

et al. 2024

J Sol-Gel Sci Technol

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“…There is harmless and environment friendly element like Rare-earth oxides. The combination of ferroelectric and ferromagnetic in single perovskite is very rare condition [12][13].…”

Section: Originationmentioning

confidence: 99%

Synthesis and characterization of Modified Bismuth ferrite (1-x)BiFeO 3 - x(BiK)Ti/MnO 3 , (x=0.15, 0.20)

Sourav,

Choudhary,

Prasad

2024

Preprint

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In present era main aim of the researchers is to develop lead free material for ferroelectric material device. Ceramics of perovskite compounds were successfully synthesized using a chemical decomposition method, with the composition (1-x) BiFeO3-x(Bi K)TiMnO3, where x was varied at 0.15 and 0.20. The confirmation of compound creation was based on the analysis of Crystelloplotic XRD pattern data. The BKTM 15% exhibits an average grain size of 0.41 µm, while BKTM 20% shows 0.40 µm. Energy-dispersive X-ray analysis detected elements such as Bi, Fe, Na, K, Ti, and Mn. Modulus property exploration revealed non-Debye model relaxation behavior, observed particularly for sensor technology applications. To investigate the relaxation and conduction mechanisms in these samples were conducted at different temperatures and recurrence. Additionally, the scanning electron microscope (SEM) was employed to examine particle allocation and the location of grain boundaries. Impedance spectroscopic studies covered a wide temperature range (300-780K) and a broad recurrence range (103-106 Hz). Complex plane and Impedance scale are semicircular arcs, which related to semiconducting character of the sample.

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Effect of Gd doping on the microstructure and electrical characteristics of Maghemite (γ-Fe₂O₃) ceramics

Dhahri,

Benamara,

Bouzidi

et al. 2024

J Sol-Gel Sci Technol

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This paper presents a novel study on the microstructure and electrical properties of gadolinium (Gd) doped maghemite (γ-Fe₂O₃) nanoparticles, emphasizing their significance for advanced applications in efficient materials. X-ray diffraction analysis confirmed that both pure and doped samples crystallized in a cubic structure (P4332 space group) with high purity. Gd doping significantly increased crystallite size and altered particle morphology, as shown by transmission electron microscopy (TEM), which revealed larger nanoparticles with cubic shapes. Thermal analysis (TGA and DTG) indicated that higher Gd concentrations enhanced thermal instability, affecting structural integrity. FTIR spectra showed shifts in Fe-O bond vibrations, suggesting lattice distortions and increased disorder. BET measurements indicated that higher Gd doping led to greater mesoporosity and surface area, countering expectations of densification. Electrical conductivity and impedance studies revealed two distinct regions: a constant conductivity at low frequencies and an exponential increase at high frequencies, attributed to small polaron hopping. Activation energy values below 200 meV support this mechanism. Gd doping decreased overall conductivity due to disrupted atomic arrangements, increased electron scattering, and modifications in the electronic band structure. Complex impedance spectroscopy illustrated higher real impedance values for doped samples, with increased Gd concentration leading to enhanced impedance. These findings elucidate the impact of Gd on the electrical properties of maghemite nanoparticles and highlight their importance in meeting the growing demands for highly efficient technologies in energy storage and electronic devices. Graphical Abstract

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Temperature- and frequency-dependent dielectric and impedance spectroscopy of double perovskite oxide BiBa0.5Ag0.5Ni2O6 electronic material

Cited by 7 publications

References 46 publications

Insights into dielectric and electrical conductivity dynamics in sol-gel synthesized Ba0.75Ni0.25Tc0.88Mn0.12O3 perovskite ceramic

Insights into dielectric and electrical conductivity dynamics in sol-gel synthesized Ba0.75Ni0.25Tc0.88Mn0.12O3 perovskite ceramic

Synthesis and characterization of Modified Bismuth ferrite (1-x)BiFeO 3 - x(BiK)Ti/MnO 3 , (x=0.15, 0.20)

Effect of Gd doping on the microstructure and electrical characteristics of Maghemite (γ-Fe₂O₃) ceramics

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