Investigation of electrical behavior and dielectric properties in polycristalline Pr0.8Sr0.2MnO3 manganite perovskite

Kharrat, A. Ben Jazia; Moutia, N.; Khirouni, K.; Boujelben, W.

doi:10.1016/j.materresbull.2018.04.035

Cited by 78 publications

(20 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The decrease in the Z 0 value with increasing temperature indicates an increase in the ac conductivity in the LPFTO sample. 9 This behavior changes completely in the high-frequency region, in which the Z 0 value merges for all the temperatures above a certain fixed frequency, indicating a possible release of space charge polarization. 9 At high temperatures, the Z 0 value is not affected by the frequency increase, which suggests the existence of a relaxation mechanism in this compound.…”

Section: Complex Impedance Analysismentioning

confidence: 91%

“…9 This behavior changes completely in the high-frequency region, in which the Z 0 value merges for all the temperatures above a certain fixed frequency, indicating a possible release of space charge polarization. 9 At high temperatures, the Z 0 value is not affected by the frequency increase, which suggests the existence of a relaxation mechanism in this compound. Figure 6 displays the evolution of the imaginary part (Z 00 ) of the impedance with frequency at different temperatures.…”

Section: Complex Impedance Analysismentioning

confidence: 91%

See 1 more Smart Citation

Investigation on electrical conductivity and dielectric property of La0.8Pb0.2(Fe,Ti)0.5O₃ceramic nanoparticles

2019

View full text Add to dashboard Cite

The modification of the structure lanthanum orthoferrites (LaFeO 3 Þ to obtain ceramic materials with enhanced structural, optical, and electrical properties constitutes an active area of research. The preparation of La 0:8 Pb 0:2 (Fe, Ti) 0:5 O 3 (LPFTO) ceramic nanoparticles by following a cation substitution approach from LaFeO 3 using sol-gel and sintering methods is described. The electrical and dielectric properties of the obtained material are investigated. The contribution of grain and grain boundary in the conduction mechanism is demonstrated by complex impedance analysis. The LPFTO ceramic nanoparticles exhibit a giant dielectric constant of the order of 10 8 . The conductivity analysis suggests the occurrence of thermally activated semiconductor behavior. Moreover, the ferromagnetic-paramagnetic semiconductor transition temperature is observed at 385 K. The ac conductivity behavior satisfies the nonoverlapping small-polaron tunneling (NSPT) model.

show abstract

Section: Complex Impedance Analysismentioning

confidence: 91%

Section: Complex Impedance Analysismentioning

confidence: 91%

Investigation on electrical conductivity and dielectric property of La0.8Pb0.2(Fe,Ti)0.5O₃ceramic nanoparticles

2019

View full text Add to dashboard Cite

show abstract

“…With rising frequencies, the activation energy values decreases slightly, as shown in figure 6(d). Nevertheless, it falls to low values at high temperature and frequencies, indicating that the sample will switch from a semiconductor to a metallic behavior as reported [27]. On the other hand, relatively low values of activation energy in the low temperature region are clear shown as compared to counterpart at the high temperature region.…”

Section: Dielectric Properties Conduction Mechanismmentioning

confidence: 50%

“…Frequency dependence of conductivity for the investigated samples at selected temperatures-d: exponential factor dependence on temperature (a) Fe; (b) FeMn; (c) FeCo.compounds is ascribed to the variety of conductivities as revealed infigure 6. In addition, A. Ben Jazia Kharrat describes the increase in s with temperature using the non-overlapping small polaron tunneling (NSPT) model where s is calculated using the relation (8)[27].Where, W H represents the polaron hopping energy, k B is the Boltzmann constant.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Role of B-site cation on the structure, magnetic and dielectric properties of nanosized La_0.7Sr_0.3Fe_1−xM_xO₃ (M = Mn; Co and x = 0, 0.5) perovskites

Ghozza

Yahia

El-Dek

2020

Mater. Res. Express

View full text Add to dashboard Cite

The easiness of preparation and tailored properties of perovskite nanoparticles rendered them an important class of materials in the last decade. In this work, La 0.7 Sr 0.3 Fe 1-x M x O 3 (M=Mn, Co and x=0, 0.5) orthoferrites were synthesized using combustion method and examined using X-ray diffraction. The orthorhombic structure was clearly obvious with Pbnm space group without the need of any thermal treatment. Field emission scanning electron microscopy (FESEM) accompanied by Energy-dispersive spectroscopy studies were also performed, evidencing the similarity of both nominal and chemical compositions for the studied orthoferrites. The thermal dependence of the dielectric properties was investigated (from room temperature to 698 K) in the frequency range (70 Hz-5 MHz). Magnetic properties were investigated at room temperature and discussed.

show abstract

Electrical Properties of Sr₃Mo_1–xW_xO₆‐Based Solid Solution

Magalhães

Paiva

Silva

et al. 2022

Physica Status Solidi (a)

View full text Add to dashboard Cite

Herein, a study on the suitability of the Sr 3 Mo 1-x W x O 6 (0.1 ≤ x ≤ 0.9) solidsolution system for radio frequency and microwave (MW) applications is reported. The ceramic powders are synthesized via solid-state reaction at 1423 K for 6 h. X-ray diffraction and scanning electron microscopy are performed to confirm the double-perovskite-type structure and investigate the surface morphology, respectively. Electrical characterization of the system as a function of temperature is performed using impedance spectroscopy. The equivalent circuit with two parallel association resistor-constant phase elements (R-CPEs), connected in series, associated with grain and grain boundary effects is used to adjust the electric response of the solid solutions. Sr 3 Mo 0.9 W 0.1 O 6 solid solution exhibit a resonant frequency temperature coefficient (τ f ) value close to zero (8.5 ppm K À1 ), showing great potential for MW applications.

show abstract

Investigation of electrical behavior and dielectric properties in polycristalline Pr0.8Sr0.2MnO3 manganite perovskite

Cited by 78 publications

References 48 publications

Investigation on electrical conductivity and dielectric property of La0.8Pb0.2(Fe,Ti)0.5O₃ceramic nanoparticles

Investigation on electrical conductivity and dielectric property of La0.8Pb0.2(Fe,Ti)0.5O₃ceramic nanoparticles

Role of B-site cation on the structure, magnetic and dielectric properties of nanosized La_0.7Sr_0.3Fe_1−xM_xO₃ (M = Mn; Co and x = 0, 0.5) perovskites

Electrical Properties of Sr₃Mo_1–xW_xO₆‐Based Solid Solution

Contact Info

Product

Resources

About

Investigation of electrical behavior and dielectric properties in polycristalline Pr0.8Sr0.2MnO3 manganite perovskite

Cited by 78 publications

References 48 publications

Investigation on electrical conductivity and dielectric property of La0.8Pb0.2(Fe,Ti)0.5O3ceramic nanoparticles

Investigation on electrical conductivity and dielectric property of La0.8Pb0.2(Fe,Ti)0.5O3ceramic nanoparticles

Role of B-site cation on the structure, magnetic and dielectric properties of nanosized La0.7Sr0.3Fe1−xMxO3 (M = Mn; Co and x = 0, 0.5) perovskites

Electrical Properties of Sr3Mo1–xWxO6‐Based Solid Solution

Contact Info

Product

Resources

About

Investigation on electrical conductivity and dielectric property of La0.8Pb0.2(Fe,Ti)0.5O₃ceramic nanoparticles

Investigation on electrical conductivity and dielectric property of La0.8Pb0.2(Fe,Ti)0.5O₃ceramic nanoparticles

Role of B-site cation on the structure, magnetic and dielectric properties of nanosized La_0.7Sr_0.3Fe_1−xM_xO₃ (M = Mn; Co and x = 0, 0.5) perovskites

Electrical Properties of Sr₃Mo_1–xW_xO₆‐Based Solid Solution