Analysis of the Electromagnetic Properties of 2000NN/2000NM Composites with Ferroelectric and Polymer Matrices

IF 0.9 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Inorganic Materials Pub Date : 2024-07-30 DOI:10.1134/s002016852470016x

V. G. Kostishin, R. I. Shakirzyanov, I. M. Isaev, E. S. Savchenko, B. M. Skibo

{"title":"Analysis of the Electromagnetic Properties of 2000NN/2000NM Composites with Ferroelectric and Polymer Matrices","authors":"V. G. Kostishin, R. I. Shakirzyanov, I. M. Isaev, E. S. Savchenko, B. M. Skibo","doi":"10.1134/s002016852470016x","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The results of studying the electrical properties of ferrite-dielectric composites containing inclusions of Mn-Zn and Ni-Zn spinel ferrites with the same initial magnetic permeability (grades 2000NM and 2000NN, respectively) and different electrical resistance are presented. Polymer and ceramic dielectrics with different values of dielectric permeability were used as matrices of composites: polystyrene (PS525), polyvinylidene fluoride (grade F2MB), lead zirconate titanate (PZT-21), and barium titanate (TBK-3). Experimental samples of composites were obtained by hot pressing (for a polymer matrix) or cold pressing with a binder (for a ferroelectric ceramic matrix). It has been shown that the radio-absorbing properties of the obtained composites strongly depend on the electrical properties of a dielectric matrix and on the electrical resistivity of a filler. The highest attenuation of electromagnetic waves of 25–27 dB in the frequency range of 4–5 GHz is observed for ferrite-polymer composites with a 2000NM semiconductor filler with a 6-mm-thick radio-absorbing material. For composites filled with a Mn-Zn ferrite, a pronounced shift in the dispersion region of magnetic permeability is also observed, which in turn changes the frequency position of peak radio absorption. For the composites with a ferroelectric matrix, the operating frequency range for both fillers was shifted toward the low-frequency region of 1–4 GHz with maximum attenuation of up to 22 dB at the same thickness of the material. It was experimentally confirmed that, at a weight content Cm of ferrite of 40 wt %, an increase in the dielectric permeability of the matrix results in a decrease in frequency fc of the center of minimum absorption and in a decrease in minimum reflection coefficient \\(K_{{{\\text{refl}}}}^{{\\min }}\\) at a metallic plate for a 2000NN filler with a high electrical resistance. For the composites with a 2000NM filler, the dependence of \\(K_{{{\\text{refl}}}}^{{\\min }}\\) (ε' of the matrix) passes through a minimum. The obtained composites can be considered as effective radio-absorbing materials for the frequency range of 1–6 GHz with peak attenuation of an electromagnetic wave in the range of 14–27 dB and with the operating frequency band of 1.1–2.5 GHz (at a level less than 10 dB).","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"10 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1134/s002016852470016x","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The results of studying the electrical properties of ferrite-dielectric composites containing inclusions of Mn-Zn and Ni-Zn spinel ferrites with the same initial magnetic permeability (grades 2000NM and 2000NN, respectively) and different electrical resistance are presented. Polymer and ceramic dielectrics with different values of dielectric permeability were used as matrices of composites: polystyrene (PS525), polyvinylidene fluoride (grade F2MB), lead zirconate titanate (PZT-21), and barium titanate (TBK-3). Experimental samples of composites were obtained by hot pressing (for a polymer matrix) or cold pressing with a binder (for a ferroelectric ceramic matrix). It has been shown that the radio-absorbing properties of the obtained composites strongly depend on the electrical properties of a dielectric matrix and on the electrical resistivity of a filler. The highest attenuation of electromagnetic waves of 25–27 dB in the frequency range of 4–5 GHz is observed for ferrite-polymer composites with a 2000NM semiconductor filler with a 6-mm-thick radio-absorbing material. For composites filled with a Mn-Zn ferrite, a pronounced shift in the dispersion region of magnetic permeability is also observed, which in turn changes the frequency position of peak radio absorption. For the composites with a ferroelectric matrix, the operating frequency range for both fillers was shifted toward the low-frequency region of 1–4 GHz with maximum attenuation of up to 22 dB at the same thickness of the material. It was experimentally confirmed that, at a weight content C_m of ferrite of 40 wt %, an increase in the dielectric permeability of the matrix results in a decrease in frequency f_c of the center of minimum absorption and in a decrease in minimum reflection coefficient \(K_{{{\text{refl}}}}^{{\min }}\) at a metallic plate for a 2000NN filler with a high electrical resistance. For the composites with a 2000NM filler, the dependence of \(K_{{{\text{refl}}}}^{{\min }}\) (ε' of the matrix) passes through a minimum. The obtained composites can be considered as effective radio-absorbing materials for the frequency range of 1–6 GHz with peak attenuation of an electromagnetic wave in the range of 14–27 dB and with the operating frequency band of 1.1–2.5 GHz (at a level less than 10 dB).

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

带有铁电和聚合物基质的 2000NN/2000NM 复合材料的电磁特性分析

摘要本文介绍了对铁氧体-电介质复合材料电气特性的研究结果，这些复合材料含有具有相同初始磁导率（等级分别为 2000NM 和 2000NN）和不同电阻值的锰锌和镍锌尖晶石铁氧体夹杂物。具有不同介电渗透率值的聚合物和陶瓷电介质被用作复合材料的基体：聚苯乙烯（PS525）、聚偏氟乙烯（F2MB 级）、锆钛酸铅（PZT-21）和钛酸钡（TBK-3）。复合材料的实验样品是通过热压（聚合物基体）或使用粘合剂冷压（铁电陶瓷基体）获得的。实验表明，所获复合材料的无线电吸收特性在很大程度上取决于电介质基体的电特性和填料的电阻率。在 4-5 GHz 频率范围内，铁氧体-聚合物复合材料对电磁波的最高衰减为 25-27 dB，其中半导体填充物为 2000NM，无线电吸收材料为 6 毫米厚。对于填充了 Mn-Zn 铁氧体的复合材料，还观察到磁导率色散区域的明显偏移，这反过来又改变了无线电吸收峰值的频率位置。对于含有铁电基体的复合材料，两种填料的工作频率范围都向 1-4 GHz 的低频区域转移，在材料厚度相同的情况下，最大衰减可达 22 dB。实验证实，当铁氧体的重量含量 Cm 为 40 wt % 时，对于具有高电阻的 2000NN 填料，基体介电渗透率的增加会导致最小吸收中心频率 fc 的降低以及金属板上最小反射系数 \(K_{{text/{refl}}}}^{/min}}/)的降低。对于使用 2000NM 填料的复合材料，\(K_{{text/{refl}}}}^{\min }})（基体的 ε'）的依赖性通过了一个最小值。所获得的复合材料可视为 1-6 GHz 频率范围内的有效无线电吸收材料，其电磁波峰值衰减范围为 14-27 dB，工作频段为 1.1-2.5 GHz（电平小于 10 dB）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Inorganic Materials 工程技术-材料科学：综合

CiteScore

1.40

自引率

25.00%

发文量

审稿时长

3-6 weeks

期刊介绍： Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.