Effect of Structural Changes on the Electrical Properties of Sol-gel derived Iron Doped Barium Titanate

Singh, Devendra Kumar; Dixit, Arati M.; Dobal, P. S.

doi:10.1088/1742-6596/2070/1/012054

Cited by 2 publications

(1 citation statement)

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“…The influence of iron ions on the structure, microstructure, and physical properties of BaTiO 3 ceramics has been widely discussed in recent years [22][23][24]. However, there are no reports in the world literature on the influence of iron admixture on the electrical properties of BLT.…”

Section: Introductionmentioning

confidence: 99%

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

Adamczyk-Habrajska,

Wodecka-Dus,

Goryczka

et al. 2024

Crystals

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A wide range of the interesting properties of electroceramics Ba0.996La0.004Ti0.999O3 (BLT4) undoubtedly deserves differentiation and optimization. For this purpose, the corresponding donor oxide dope Fe2O3 was introduced in excess quantities into the base ceramics. In this way, an innovative ceramic material with the general formula of Ba0.996La0.004Ti1−yFeyO3 (BLTF), for y = 0.001, 0.002, 0.003, 0.004, has been produced. The crystal structure of BLTF ceramics was investigated using X-ray diffraction. The diffraction peaks in XRD confirm the formation of the tetragonal perovskite phase. The electrical properties of BLTF ceramics have been tested using impedance spectroscopy, in the frequency range of 20 Hz–2 MHz and the temperature range of 20–580 °C. To gain absolute certainty on the consistency of the measured data, the obtained impedance spectra were analyzed using the Kramers–Kronig method. The usage of an equivalent circuit, proposed by the authors, allowed grain and grain boundary resistivity to be obtained. Based on the diagram of the natural logarithm of the mentioned resistivity versus the reciprocal absolute temperature, the activation energies of the conductivity processes have been determined. The values of activation energies indicated that the admixture of iron introduced into the BLT4 ceramics played a crucial role in the conductivity of grains and intergranular borders.

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Section: Introductionmentioning

confidence: 99%

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

Adamczyk-Habrajska,

Wodecka-Dus,

Goryczka

et al. 2024

Crystals

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Giant effect on structural, magnetic, electrical, and optical properties of lead-free Ba_0.6Sr_0.4Ti_1-xAl_xO₃ ceramics via Sr and Al Co-doping engineering

Mahmud

Ahamed

Khan

2022

Mater. Res. Express

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In this research, structural, magnetic, electrical, and optical properties of Al3+ substituted Ba0.6Sr0.4Ti1-xAlxO3 ceramics (where x = 0.00 to 0.20) have been investigated and discussed. The ceramic samples have been successfully synthesized by the conventional solid-state reaction method. The crystallinity of the prepared samples has been confirmed by X-ray peak broadening techniques such as the Williamson Hall (W-H) plot technique and the Scherrer method. The lattice constant "a", showing a significant drop as Al concentration increases, varies from 3.9420A to 3.9210A. The FTIR spectrum revealed a prominent peak between 435 cm−1 to 540 cm−1, without showing any secondary phase. Raman spectroscopic analysis showed that the prepared samples are in cubic phase with no phase transition. The shifting of a dominating peak in Raman at 580 cm-1 is due to the development of AlTi defects. VSM analysis at room temperature showed the ferromagnetic characteristics of all the samples. The highest value of the anisotropic constant (Ka~39.933 emu/cm3) has been seen at x=0.10. The real component of initial permeability is almost constant for the frequency range of about 75 MHz, and above this frequency range, it quickly reduces. At the high-frequency range, the prepared samples show an excellent relative quality factor due to the low dielectric loss, notably when x = 0.05. The prepared perovskites exhibited minimum eddy current loss characteristics due to the increment of AC resistivity at x=0.20. UV–visible spectroscopy shows a significant change in the energy bandgap from 3.23 eV to 3.04 eV with the doping concentrations.

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Effect of Structural Changes on the Electrical Properties of Sol-gel derived Iron Doped Barium Titanate

Cited by 2 publications

References 29 publications

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

Giant effect on structural, magnetic, electrical, and optical properties of lead-free Ba_0.6Sr_0.4Ti_1-xAl_xO₃ ceramics via Sr and Al Co-doping engineering

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Effect of Structural Changes on the Electrical Properties of Sol-gel derived Iron Doped Barium Titanate

Cited by 2 publications

References 29 publications

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

Giant effect on structural, magnetic, electrical, and optical properties of lead-free Ba0.6Sr0.4Ti1-xAlxO3 ceramics via Sr and Al Co-doping engineering

Contact Info

Product

Resources

About

Giant effect on structural, magnetic, electrical, and optical properties of lead-free Ba_0.6Sr_0.4Ti_1-xAl_xO₃ ceramics via Sr and Al Co-doping engineering