Shielding effectiveness of 0.96 MxMg1−xTiO3 - 0.04 SrTiO3 solid solutions in Ku and K frequency band (12.40 GHz-18.00 GHz)

IF 1.7 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Electroceramics Pub Date : 2023-06-09 DOI:10.1007/s10832-023-00316-y

Komal Sharma, Hardeep Kaur, Shalini Bahel

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Abstract

In this research work, the microwave dielectric and shielding properties of (0.96M_xMg_1-xTiO₃ – 0.04SrTiO₃) (M = 0, x = 0.0; M = Zn, x = 0.05; M = Zn, x = 0.075; M = Co, x = 0.05; and M = Co, x = 0.075) solid solutions were studied in a Ku and K frequency band using a vector network analyzer. The samples were prepared via the auto-ignition combustion method and sintered at a temperature of 1200°C for 4 hours. An investigation of the shielding properties revealed that these materials' shielding effectiveness (SE) varied as a function of composition and frequency. The shielding analysis exhibited that compositions (M = Zn, x = 0.05) and (M = Co, x = 0.05) showed maximum shielding effectiveness by providing SE > 10 dB for a bandwidth of 2.72 GHz and 4.48 GHz, respectively. The highest SE was observed for composition (M = Co, x = 0.05) at a frequency of 17.21 GHz with SE~31.05 dB corresponding to a restriction of 99.81 % of incident power. These compositions are proposed as effective shielding materials for electromagnetic radiations in Ku-band and K-band.

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0.96 MxMg1−xTiO3 - 0.04 SrTiO3固溶体在Ku和K频段(12.40 GHz-18.00 GHz)的屏蔽效能

在这项研究工作中，使用矢量网络分析仪研究了 (0.96MxMg1-xTiO3 - 0.04SrTiO3) (M = 0, x = 0.0; M = Zn, x = 0.05; M = Zn, x = 0.075; M = Co, x = 0.05; 和 M = Co, x = 0.075) 固溶体在 Ku 和 K 频段的微波介电和屏蔽特性。样品通过自燃燃烧法制备，并在 1200°C 温度下烧结 4 小时。对屏蔽特性的研究表明，这些材料的屏蔽效能（SE）随成分和频率的变化而变化。屏蔽分析表明，成分（M = Zn，x = 0.05）和（M = Co，x = 0.05）分别在 2.72 千兆赫和 4.48 千兆赫的带宽下提供 SE > 10 分贝，显示出最大的屏蔽效果。在频率为 17.21 GHz 时，成分 (M = Co, x = 0.05) 的 SE 最高，为 31.05 dB，相当于限制了 99.81 % 的入射功率。建议将这些成分作为 Ku 波段和 K 波段电磁辐射的有效屏蔽材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.