Comparative study of Mn2+ and Zr4+ co-substituted Zn-Co spinel ferrites as microwave absorbing materials in Ku (12.4–18 GHz) and K (18-26.5 GHz) frequency bands

IF 1.7 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Electroceramics Pub Date : 2023-11-30 DOI:10.1007/s10832-023-00341-x

Mandeep Kaur, Shalini Bahel

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Abstract

The present research work aims to address the rising demand for microwave-absorbing materials (MAMs) due to the relentless growth of detrimental electromagnetic wave pollution. Herein, the absorption behavior of manganese-zirconium co-substituted zinc-cobalt spinel ferrites with chemical composition Zn_0.25Co_0.75(MnZr)_xFe_2−2xO₄ (0.05 ≤ x ≤ 0.25, ∆x = 0.05) were investigated in the Ku (12.4–18 GHz) and K (18-26.5 GHz) frequency bands. Samples of Mn-Zr-Zn-Co ferrites were successfully synthesized via the sol-gel citrate route with sintering at a temperature of 1000 °C for 6 h. Fourier transform infrared spectroscopy (FT-IR) confirmed the presence of two vibrational peaks in the spinel lattice structure. The complex dielectric permittivity and complex magnetic permeability were measured using a vector network analyzer (VNA). The composition MZ 0.15 outperformed all the prepared compositions by exhibiting a minimum reflection loss of -34.55 dB at a matching frequency of 15.09 GHz and a matching thickness of 2.7 mm in Ku-band and a reflection loss as low as -30.40 dB at a matching frequency of 25.48 GHz and a matching thickness of 1.5 mm in K-band. The obtained results indicate that the fabricated specimens have the potential for designing efficient microwave-absorbing materials in the Ku and K frequency bands.

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Mn2+和Zr4+共取代Zn-Co尖晶石铁氧体作为Ku (12.4-18 GHz)和K (18-26.5 GHz)频段吸波材料的比较研究

目前的研究工作旨在解决由于有害电磁波污染的持续增长而对微波吸收材料(MAMs)的需求不断增加的问题。本文研究了化学成分为Zn0.25Co0.75(MnZr)xFe2−2xO4(0.05≤x≤0.25，∆x = 0.05)的锰锆共取代锌钴尖晶石铁氧体在Ku (12.4-18 GHz)和K (18-26.5 GHz)频段的吸收行为。采用溶胶-凝胶柠檬酸法制备了Mn-Zr-Zn-Co铁氧体样品，在1000℃下烧结6 h，傅里叶变换红外光谱(FT-IR)证实了尖晶石晶格结构中存在两个振动峰。采用矢量网络分析仪(VNA)测量复介电常数和复磁导率。组合物mz0.15优于所有制备的组合物，在匹配频率为15.09 GHz，匹配厚度为2.7 mm的ku波段，最小反射损耗为-34.55 dB，在匹配频率为25.48 GHz，匹配厚度为1.5 mm的k波段，反射损耗低至-30.40 dB。结果表明，制备的样品具有设计Ku和K波段高效吸波材料的潜力。

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来源期刊

Journal of Electroceramics 工程技术-材料科学：硅酸盐

CiteScore

2.80

自引率

5.90%

发文量

审稿时长

5.7 months

期刊介绍： While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including: -insulating to metallic and fast ion conductivity -piezo-, ferro-, and pyro-electricity -electro- and nonlinear optical properties -feromagnetism. When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice. The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.