Optimization using RSM-CCD in the fabrication of magnesium-doped bismuth ferrite nanoparticles via sol–gel auto-combustion method for enhanced photocatalytic performance

Results in Physics, Journal Year: 2025, Volume and Issue: unknown, P. 108114 - 108114

Published: Jan. 1, 2025

Language: Английский

Negative Temperature Coefficient of Resistance (NTCR) of Bismuth Manganite Nanoparticles: Polypyrrole Conductivity Enhancement

Journal of Composites Science, Journal Year: 2025, Volume and Issue: 9(5), P. 224 - 224

Published: April 30, 2025

Polypyrrole (PPy)-doped bismuth calcium manganite (BCM) nanocomposites were synthesized by chemical polymerization. The amorphous nature of the polypyrrole and monoclinic crystal structure BCM particles (35–65 nm) confirmed various microstructural, X-ray powder, spectroscopy techniques. DC conductivity analysis via correlated barrier-hopping (CBH) model Mott’s variable-range hopping (MVRH) showed that exhibited ionic conduction. Activation energies, evaluated from Arrhenius plots, PPy/BCM-30 (30 wt.% BCM) had minimum value 0.09 eV, indicating maximum normal NTCR behavior, with resistance decreasing temperature. CBH described conduction process, AC measurements indicated was frequency-independent at lower frequencies but became dispersive frequency-dependent higher frequencies, conforming to Jonscher’s power law. study revealed transport electrical charge in material followed model. These results demonstrate how promising PPy/BCM are for energy storage, sensors, electronic materials.

Language: Английский

Unleashing the Potential: Strategies for Enhancing Performance of Electrospun PVDF-Based Piezoelectric Nanofibrous Membranes

Fibers and Polymers, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 18, 2024

Language: Английский