Investigations on Dielectric, Transport, and Ferroelectric Properties of Ca-Modified Bi<subscript>0.80</subscript>La<subscript>0.20</subscript>FeO<subscript>3</subscript> Ceramic Synthesized by Solid State Reaction Route.
In: Journal of Electronic Materials, Jg. 52 (2023-07-01), Heft 7, S. 4312-4320
Online
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Zugriff:
Ca ion-modified Bi 0.80−x Ca x La 0.20 FeO 3 (BCLFO) polycrystalline samples (with x = 0.0, 0.03, 0.06, and 0.12), synthesized by solid-state reaction, and their structural, dielectric, transport, and ferroelectric properties are explored. Rietveld analysis of XRD data revealed that Ca ions provoke structural distortions followed by a phase transition for x = 0.12. The Williamson–Hall analysis revealed that Ca doping enhances the distortion in FeO 6 octahedra, resulting in increases in strain and particle size. Scanning electron microscopy demonstrates a decrease in grain size with Ca doping. Room-temperature dielectric properties are remarkably enhanced with Ca incorporation when compared with those of undoped Bi 0.80 La 0.20 FeO 3 (BLFO). Furthermore, the ac conductivity of these samples has been investigated from room temperature to 500 °C and different conduction mechanisms were found in different temperature regions. Ca incorporation prevents Bi evaporation and fluctuation of Fe oxidation states, which is reflected in better ferroelectric polarization versus electric field (P–E) loops than those of BLFO ceramics. However, this behavior reverses for x = 0.12 due to a structural rhombohedral to orthorhombic phase transition. [ABSTRACT FROM AUTHOR]
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Titel: |
Investigations on Dielectric, Transport, and Ferroelectric Properties of Ca-Modified Bi<subscript>0.80</subscript>La<subscript>0.20</subscript>FeO<subscript>3</subscript> Ceramic Synthesized by Solid State Reaction Route.
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Autor/in / Beteiligte Person: | Sharma, Subhash ; Kumar, Pawan ; Kumar, Manish ; Singh, Vikash ; Yocupicio-Gaxiola, Rosario I. ; Siqueiros, J. M. ; Raymond Herrera, O. |
Link: | |
Zeitschrift: | Journal of Electronic Materials, Jg. 52 (2023-07-01), Heft 7, S. 4312-4320 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 0361-5235 (print) |
DOI: | 10.1007/s11664-023-10209-z |
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