Study of structural, conduction mechanism and dielectric behavior of La0.7Sr0.3Mn0.8Fe0.2O3 manganite

The new perovskite compound La 0.7 Sr 0.3 Mn 0.8 Fe 0.2 O 3 (LSMFO) was synthesized via the solid-state reaction process. The structural properties of LSMFO were measured at room temperature using Scanning Electron Microscopy and powder X-ray pattern. Our sample crystallized in the rhombohedral ( R...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2020-12, Vol.31 (23), p.21732-21746
Main Authors: Raddaoui, Z., El Kossi, S., Al-shahrani, Thamraa, Bourguiba, M., Dhahri, J., Chafra, M., Belmabrouk, H.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Crystallization
Dielectric properties
Dielectric relaxation
Electrical conduction
Electrical resistivity
Electronic devices
Materials Science
Optical and Electronic Materials
Perovskites
Room temperature
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Summary:The new perovskite compound La 0.7 Sr 0.3 Mn 0.8 Fe 0.2 O 3 (LSMFO) was synthesized via the solid-state reaction process. The structural properties of LSMFO were measured at room temperature using Scanning Electron Microscopy and powder X-ray pattern. Our sample crystallized in the rhombohedral ( R 3 ¯ c ) structure. The electrical and dielectric behaviors were investigated by complex impedance (CI) spectroscopy. The results indicated the existence of an electrical relaxation process in LSMFO. Moreover, the frequency related to the ac-conductivity result was determined by Jonscher's universal law and the Correlated Barrier Hoping was the most appropriate theoretical mechanism to elucidate the electrical conduction process. The dielectric studies revealed that the dielectric relaxation was monitored by the dc electrical mechanism. The dielectric properties showed a high permittivity, which supports the potential use of LSMFO in electronic devices.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-04686-9