Influence of oxygen deficiency on optical and dielectric properties of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="italic">La</mml:mi></mml:mrow><mml:mrow><mml:mn>0.75</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="italic">Ba</mml:mi></mml:mrow><mml:mrow><mml:mn>0.10</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="italic">Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>0.15</mml:mn></mml:

Bouzayen, M.; Dhahri, R.; Benali, A.; Chaabouni, Slaheddine; Khirouni, K.; Costa, B.F.O.

doi:10.1016/j.cplett.2020.137106

Cited by 3 publications

(3 citation statements)

References 43 publications

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“…On the other hand, the appearance of the carbon (C) signal can be ascribed to carbon tape on which the sintered pellet is mounted with a holder. 35 Nevertheless, the small atomic number ( Z ) of lithium element, which is less than the sensitivity of EDX to the element's atomic number, explains its invisibility in the spectrum. 30 …”

Section: Resultsmentioning

confidence: 99%

Investigation of structural, morphological, and transport properties of a multifunctional Li-ferrite compound

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Investigation of structural, morphological, and transport properties of a multifunctional Li-ferrite compound

et al. 2022

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“…Our samples were obtained from an already made perovskite La 0.75 Ba 0.10 Sr 0.15 FeO 2.875 , which was synthesized via sol gel method followed by thermal active process using oxygen acceptor metal (titanium Ti). This procedure was well described in our previous work [22]. Following the same procedure, we prepared the samples with δ = 0.375 and δ = 0.50.…”

Section: Methodsmentioning

confidence: 99%

“…In our previous papers [22], we con ned our study to the oxygen de cient samples La 0.75 Ba 0.10 Sr 0.15 FeO 2.875−δ for de ciency rates less than 0.25. In order to extend this work and build upon it, we attempted to increase the de ciency oxygen concentration so as to investigate their effect on the purity of phases (to examine the degree of non-stoichiometry to which the perovskite structure is presented).…”

Section: Introductionmentioning

confidence: 99%

Analysis of the electrical transport, conductivity, and dielectric relaxation behavior of La0.75 Ba0.10 Sr0.15 Fe O2.875-δ (δ = 0.375 and 0.50) brownmillerite oxides

Bouzayen

Dhahri

Saadi

et al. 2021

J Mater Sci: Mater Electron

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The topotactic reduction of La 0.75 Ba 0.10 Sr 0.15 FeO 2.875 with titanium metal leads to a new isostructural material of the composition La 0.75 Ba 0.10 Sr 0.15 FeO 2.875−δ (δ = 0.375 and 0.50). XRD analysis of phases con rms that the obtained compound adopts a brownmillerite-type structure. A slight distorted monoclinic P2/m was found to describe the crystal structure. The transport properties have been investigated by current-voltage (I-V). The electric and dielectric measurements were carried out covering a wide range of temperature (300-600 K). Our materials display semiconducting properties as well as mixed ionic and electronic conductivity. At high temperatures, the activation energy values proved to be around 907 − 630 meV, which refers basically to oxygen vacancies conduction. The analysis of dielectric properties and dielectric losses (ε', tanδ) of both compounds vs temperature at different frequencies demonstrates two relaxer attitudes. A low dielectric loss and low electrical conductance were displayed.Relying upon these values, these materials stand for perfect candidates for micro-electronics devices.

show abstract

Analysis of the electrical transport, conductivity and dielectric relaxation behavior of La0.75 Ba0.10 Sr0.15 Fe O2.875-δ (δ = 0.375 and 0.50) brownmillerite oxides

Bouzayen

Dhahri

Saadi

et al. 2021

Preprint

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The topotactic reduction of La0.75Ba0.10Sr0.15FeO2.875 with titanium metal leads to a new isostructural material of the composition La0.75Ba0.10Sr0.15FeO2.875−δ (δ = 0.375 and 0.50). XRD analysis of phases confirms that the obtained compound adopts a brownmillerite-type structure. A slight distorted monoclinic P2/m was found to describe the crystal structure. The transport properties have been investigated by current–voltage (I–V). The electric and dielectric measurements were carried out covering a wide range of temperature (300–600 K). Our materials display semiconducting properties as well as mixed ionic and electronic conductivity. At high temperatures, the activation energy values proved to be around 907 − 630 meV, which refers basically to oxygen vacancies conduction. The analysis of dielectric properties and dielectric losses (ε’, tanδ) of both compounds vs temperature at different frequencies demonstrates two relaxer attitudes. A low dielectric loss and low electrical conductance were displayed. Relying upon these values, these materials stand for perfect candidates for micro-electronics devices.

show abstract

Influence of oxygen deficiency on optical and dielectric properties of La0.75Ba0.10Sr0.15

Cited by 3 publications

References 43 publications

Investigation of structural, morphological, and transport properties of a multifunctional Li-ferrite compound

Investigation of structural, morphological, and transport properties of a multifunctional Li-ferrite compound

Analysis of the electrical transport, conductivity, and dielectric relaxation behavior of La0.75 Ba0.10 Sr0.15 Fe O2.875-δ (δ = 0.375 and 0.50) brownmillerite oxides

Analysis of the electrical transport, conductivity and dielectric relaxation behavior of La0.75 Ba0.10 Sr0.15 Fe O2.875-δ (δ = 0.375 and 0.50) brownmillerite oxides

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