Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/103481
Title: | Investigation of temperature and frequency dependence of the dielectric properties of multiferroic (La0.8Ca0.2)0.4Bi0.6FeO3 nanoparticles for energy storage application | Authors: | Bougoffa, Amira Benali, E. M. Benali, A. Bejar, M. Dhahri, E. Graça, M. P. F. Valente, M. A. Otero-Irurueta, G. Costa, B. F. O. |
Issue Date: | 22-Feb-2022 | Project: | UID/04564/ 2020 UID/CTM/50025/2013 I3N |
Serial title, monograph or event: | RSC Advances | Volume: | 12 | Issue: | 11 | Abstract: | In this work we synthesized the multifunctional (La0.8Ca0.2)0.4Bi0.6FeO3 material using a sol-gel process. Structural and morphologic investigations reveal a Pnma perovskite structure at room temperature with spherical and polygonal nanoparticles. A detailed study of the temperature dependence of the dielectric and electrical properties of the studied material proves a typical FE-PE transition with a colossal value of real permittivity at 350 K that allows the use of this material in energy storage devices. Thus, the investigation of the frequency dependence of the ac conductivity proves a correlated barrier hopping (CBH) conduction mechanism to be dominant in the temperature ranges of 150-170 K; the two observed Jonscher's power law exponents, s 1 and s 2 between 180 K and 270 K correspond to the observed dispersions in the ac conductivity spectra in this temperature region, unlike in the temperature range of 250-320 K, the small polaron tunnel (NSPT) was considered the appropriate conduction model. | URI: | https://hdl.handle.net/10316/103481 | DOI: | 10.1039/d1ra08975g | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
Files in This Item:
SCOPUSTM
Citations
14
checked on Oct 7, 2024
WEB OF SCIENCETM
Citations
12
checked on Oct 2, 2024
Page view(s)
111
checked on Oct 8, 2024
Download(s)
67
checked on Oct 8, 2024
Google ScholarTM
Check
Altmetric
Altmetric
This item is licensed under a Creative Commons License