Magneto-dielectrically modified composites of vanadium doped Cd0.35Zn0.65VxFe2−xO4 spinel ferrites and graphene nanoplatelets

IF 4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals Pub Date : 2025-05-26 DOI:10.1016/j.synthmet.2025.117893

Nazim Ali, Nasir Amin, Muhammad Ajaz-un-Nabi, Muhammad Imran Arshad

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引用次数: 0

Abstract

This study investigates the structural, magnetic, and dielectric properties of composites having the chemical formula

{Cd}_{0.35} {Zn}_{0.65} V_{x} {Fe}_{2 - x} O_{4} (x = 0.0, 0.03)

/Graphene nanoplatelets (GNP =1.25 wt%, 2.5 wt%, 3.75 wt%, and 5 wt%) synthesized via a sol-gel auto-combustion method by following the bath sonication. X-ray diffraction (XRD) confirms the spinel matrix, showing lattice expansion at lower GNP concentrations and contraction at 5 wt%GNP. The crystallite size was 35.9 nm for 5 wt%GNP. Magnetic analysis revealed improved saturation magnetization (M_S = 9.14 emu/g) and coercivity (Hc = 128.01 Oe) for 5 wt%GNP. Dielectric studies show reduced dielectric loss and improved quality factors, making the composites suitable for high-frequency applications. The optimized 5 wt%GNP composite exhibits a balance between structural stability, magnetic response, and dielectric performance, demonstrating its potential for electromagnetic and energy storage applications.

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钒掺杂Cd0.35Zn0.65VxFe2−xO4尖晶石铁氧体和石墨烯纳米片的磁介电修饰复合材料

本研究研究了化学配方Cd0.35Zn0.65VxFe2−xO4x=0.0,0.03/石墨烯纳米片（GNP =1.25 wt%, 2.5 wt%， 3.75 wt%和5 wt%）的复合材料的结构，磁性和介电性能。x射线衍射（XRD）证实了尖晶石基体，在GNP浓度较低时显示出晶格膨胀，在GNP浓度为5 wt%时显示出收缩。当GNP为5 wt%时，晶粒尺寸为35.9 nm。磁性分析表明，当GNP为5 wt%时，饱和磁化强度（MS = 9.14 emu/g）和矫顽力（Hc = 128.01 Oe）得到改善。介电研究表明，降低了介电损耗，提高了质量因子，使复合材料适用于高频应用。优化后的5 wt%GNP复合材料在结构稳定性、磁响应和介电性能之间取得了平衡，展示了其在电磁和储能应用方面的潜力。

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来源期刊

Synthetic Metals 工程技术-材料科学：综合

CiteScore

8.30

自引率

4.50%

发文量

189

审稿时长

33 days

期刊介绍： This journal is an international medium for the rapid publication of original research papers, short communications and subject reviews dealing with research on and applications of electronic polymers and electronic molecular materials including novel carbon architectures. These functional materials have the properties of metals, semiconductors or magnets and are distinguishable from elemental and alloy/binary metals, semiconductors and magnets.