Electrical conductivity and ac dielectric properties of La0.8Ca0.2-Pb FeO3 (x= 0.05, 0.10 and 0.15) perovskite compounds

Benali, A.; Bejar, M.; Dhahri, E.; Graça, M.F.P.; Costa, L.C.

doi:10.1016/j.jallcom.2015.09.018

Cited by 63 publications

(14 citation statements)

References 37 publications

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“…Thus, the total conductivity has both the grain and grain boundary contributions. These results are quite similar to those of doped lanthanum ferrite systems 50 .…”

Section: Tablesupporting

confidence: 88%

Structural, morphological, Raman, dielectric and electrical properties of La_1−2xBa_xBi_xFeO₃ (0.00 ≤ x ≤ 0.20) compounds

Benali

Bejar

et al. 2021

RSC Adv.

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“…Thus, the total conductivity has both the grain and grain boundary contributions. These results are quite similar to those of doped lanthanum ferrite systems 50 .…”

Section: Tablesupporting

confidence: 88%

Structural, morphological, Raman, dielectric and electrical properties of La_1−2xBa_xBi_xFeO₃ (0.00 ≤ x ≤ 0.20) compounds

Benali

Bejar

et al. 2021

RSC Adv.

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“…where is the activation energy, T is the absolute temperature, and is Boltzmann constant. The conductivity evolution according to temperature proves a semiconductor behavior of this ferrite [24]. The variation of the conductivity logarithm as a function of the inverse of temperature is given in Fig4.…”

Section: Electrical Conductivitymentioning

confidence: 73%

Dependence of the Ni0.4Zn0.6Fe2O4 spinel ferrite on frequency and temperature using impedance spectroscopy tool

Hajlaoui

Dhahri

Kamel

2020

Preprint

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Ni0.4Zn0.6Fe2O4 ferrites were prepared by the conventional solid-state method. The X-ray study allowed the identification of a single orthorhombic phase. The conductivity of the prepared sample was measured at different frequencies in the temperature range 340 K to 600 K. The obtained results are discussed in terms of charge carriers hopping. We showed that the dielectric permittivity is high at different temperatures and various frequencies. The impedance plane findings present semicircle arcs at various temperatures and an electrical equivalent circuit was determined. In addition, the obtained two relaxation times were established as a function of temperature.

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“…The high frequency semicircle is the grain contribution and the grain boundary contribution comes from the low frequency semicircle. 7,17 The grain conductivity and grain boundary contribution can be calculated 10 with the following equations: where g and gb are conductivity contributed by grain and grain boundary, t is thickness of the samples, A is surface area of the samples, and R g and R gb are resistivity contributed by grain and grain boundary. Table 2 shows the grain and grain boundary conductivity obtained from the equivalent electrical circuit model of the La 1Àx Sr x FeO 3 samples.…”

Section: Methodsmentioning

confidence: 99%

Effect of Sr-substitution on the structural and dielectric properties of LaFeO₃ perovskite materials

2018

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The study aims to investigate the structural and dielectric properties of perovskite La 1Àx Sr x FeO 3 (x ¼ 0:1, 0.2, 0.3, and 0.4) synthesized by sol-gel and sintering methods. X-ray diffraction (XRD), transmission electron microscopy (TEM), and LCR-Meter were used to identify the phase, crystallography parameters, morphology, particle size, and electrical behavior of the synthesized perovskite materials. The samples showed a single-phase orthorhombic crystal structure with Pbnm space group. Sr-substitution induced the volume unit cell and crystallite size to decrease. The synthesized nanoparticles were uniform and homogeneous with the particle size less than 200 nm. Impedance spectroscopy (IS) was used to explain the electrical behavior as a function of frequency (100 Hz to 1 MHz) at various temperatures (300-373 K). The presence of small polarons as charge carriers within the grain and grain boundary were elucidated from the electrical conductivity experiments. Sr-substitution caused the dielectric constant and electronic conductivity to increase with the highest values obtained from La 1Àx Sr x FeO 3 (x ¼ 0:4).

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Electrical conductivity and ac dielectric properties of La0.8Ca0.2-Pb FeO3 (x= 0.05, 0.10 and 0.15) perovskite compounds

Cited by 63 publications

References 37 publications

Structural, morphological, Raman, dielectric and electrical properties of La_1−2xBa_xBi_xFeO₃ (0.00 ≤ x ≤ 0.20) compounds

Structural, morphological, Raman, dielectric and electrical properties of La_1−2xBa_xBi_xFeO₃ (0.00 ≤ x ≤ 0.20) compounds

Dependence of the Ni0.4Zn0.6Fe2O4 spinel ferrite on frequency and temperature using impedance spectroscopy tool

Effect of Sr-substitution on the structural and dielectric properties of LaFeO₃ perovskite materials

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Electrical conductivity and ac dielectric properties of La0.8Ca0.2-Pb FeO3 (x= 0.05, 0.10 and 0.15) perovskite compounds

Cited by 63 publications

References 37 publications

Structural, morphological, Raman, dielectric and electrical properties of La1−2xBaxBixFeO3 (0.00 ≤ x ≤ 0.20) compounds

Structural, morphological, Raman, dielectric and electrical properties of La1−2xBaxBixFeO3 (0.00 ≤ x ≤ 0.20) compounds

Dependence of the Ni0.4Zn0.6Fe2O4 spinel ferrite on frequency and temperature using impedance spectroscopy tool

Effect of Sr-substitution on the structural and dielectric properties of LaFeO3 perovskite materials

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Structural, morphological, Raman, dielectric and electrical properties of La_1−2xBa_xBi_xFeO₃ (0.00 ≤ x ≤ 0.20) compounds

Structural, morphological, Raman, dielectric and electrical properties of La_1−2xBa_xBi_xFeO₃ (0.00 ≤ x ≤ 0.20) compounds

Effect of Sr-substitution on the structural and dielectric properties of LaFeO₃ perovskite materials