Dielectric and electrical conduction behaviour of Al3+ substituted ZnCr2O4 chromites

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Effect of Fe3+ ions substitution on electrical and dielectric properties of MgFexCr2-xO4 (x = 0, 0.2, and 0.4 mol%) chromites prepared by solution combustion method

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 8, P. 100655 - 100655

Published: June 1, 2024

This paper reports the structural, dielectric and electrical properties of Fe3+ ions substituted magnesium chromite with composition MgFexCr2-xO4 (x = 0, 0.2, 0.4 mol%) synthesized via solution combustion method. The structural analysis was done by XRD pattern which confirmed formation cubic crystal symmetry samples Fd-3m space group. value lattice parameters chromites slightly increased increasing concentration ions. TEM (Transmission electron microscopy) micrographs at different magnifications showed spherical particles sample average particle size found to be ≈ 56.22 nm. (dielectric constant loss) ac conductivity were investigated in frequency range 100 Hz- kHz temperature 50 °C 350 °C. studies that parameter decreases high can explained Maxwell-Wagner type charge polarization. increases due increase dependent studied an temperature, followed Jonscher's universal power law. grain boundary defect barrier. non-Debye relaxation behaviour Cole-Cole plot. obtained result shows capability for fabrication micro-electronic devices, sensors, other electronic devices.

Language: Английский

Sol-gel auto-combustion synthesis of Co0.5Cu0.5Cr0.5GdxFe1.5-xO4 spinel ferrites and their magneto-dielectric properties

Ceramics International, Journal Year: 2024, Volume and Issue: 50(21), P. 43490 - 43499

Published: Aug. 13, 2024

Language: Английский