Effect of Nd 3+ and Cd 2+ ions co-substitution on the dielectric and electron transport properties of spinel strontium nanoferrites
Source abstract
Abstract
Abstract The work reports microemulsion synthesis of spinel nanoferrites having a nominal composition of Sr 1−x Nd x Fe 2−y Cd y O 4 (0.0≤x≤0.1, 0.0≤y≤1.0). X-ray diffraction (XRD) patterns of powdered products annealed at 1073 K for three hours revealed the cubic Spinel structure with an average crystallite size in the range of 23–35 nm. The room temperature dc resistivity ( ρ ) has its maximum value for the composition Sr 0.92 Nd 0.08 Fe 1.2 Cd 0.8 O 4. However, for this composition the dielectric parameters and ac conductivity have their minimum values. The magnitudes of these parameters decrease with increasing frequency at low frequency region and then show almost independent frequency behavior at higher frequencies. The results are interpreted in terms of dielectric polarization with great detail. Electrochemical impedance spectroscopy results revealed that conduction process is predominantly governed by grain boundary volume. High resistivity and low dielectric constant of investigated material suggests that it may be employed in microwave devices.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Multiferroics and related materials · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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