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Study of Morphological, Optical and Microwave Properties of Strontium-Doped Cobalt Ferrites
Journal of Electronic Materials ( IF 2.2 ) Pub Date : 2020-05-20 , DOI: 10.1007/s11664-020-08212-9
Amna Mir , Mohammad Qadeer , Rana Waqas , Salman Naeem Khan

This work presents the effect of structural variation of strontium cobalt iron oxide on the electromagnetic properties for potential use of a perovskite structure in microwave applications. Various grades of strontium cobalt iron oxides were synthesized with varying concentration of Sr2+ and Co2+ using a sol–gel auto combustion route. X-ray diffraction confirmed the structural variation from cubic spinel (Fd-3m) to cubic primitive (Pm-3m) and finally to a perovskite structure. Electromagnetic properties were investigated using a vector network analyzer over a broad frequency range of 1–18 GHz. It was found that structural transition from spinel to perovskite resulted in a considerable increase in permittivity, together with significant decrease in permeability. Electromagnetic response and reflection loss indicates that the proposed composition is a suitable substrate material for miniaturized antenna applications.



中文翻译:

锶掺杂钴铁氧体的形貌,光学和微波特性研究

这项工作提出了锶钴铁氧化物的结构变化对电磁性能的影响,从而潜在地将钙钛矿结构用于微波应用。合成了不同浓度的Sr 2+和Co 2+各种等级的锶钴铁氧化物使用溶胶-凝胶自动燃烧路线。X射线衍射证实了从立方尖晶石(Fd-3m)到立方原始晶体(Pm-3m)以及最终到钙钛矿结构的结构变化。使用矢量网络分析仪在1-18 GHz的宽频率范围内研究了电磁性能。发现从尖晶石到钙钛矿的结构转变导致介电常数显着增加,并且渗透率显着降低。电磁响应和反射损耗表明,所提出的组合物是用于小型化天线应用的合适基底材料。

更新日期:2020-07-06
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