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Sol-gel synthesis of transition-metal doped ferrite compounds with potential flexible, dielectric and electromagnetic properties

机译：具有潜在柔性，电介质和电磁特性的过渡金属掺杂铁氧体化合物的溶胶 - 凝胶合成

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摘要

A compact and flexible dielectric substrate with efficient electromagnetic performances both in flat and bending conditions are presented in this paper. The proposed substrates, for potential microwave radiator applications have been fabricated from Mn doped zinc ferrite compounds by sol-gel method. Prepared MnxZn(1-x)Fe2O4, (x = 0.0, 0.2, 0.4, 0.6, 0.8) substrates were analysed structurally by X-ray diffraction spectroscopy and morphologically studied by scanning electron microscopy. We studied the optical and dielectric properties in the microwave range to evaluate the new material as a dielectric substrate for microwave applications. The prepared flexible substrates exhibit high dielectric permittivity and low dielectric loss in the microwave frequency range. For the proof of concept, the electromagnetic performances both at flat and bending conditions were verified by loading an electromagnetic radiator. We report the detailed measured performances of the reflection coefficient below -10 dB, average efficiency above 73% and average realized gain above 1.5 dBi within the operational bandwidth for the first time. The measured stable omnidirectional radiation patterns both in flat and bending conditions also confirm the potential of the proposed material to be used as a new flexible dielectric substrate.
机译：本文提出了一种具有高效电磁性能的紧凑且柔性的电介质基板，本文提出了平坦和弯曲条件。通过溶胶 - 凝胶法制造了用于潜在微波辐射器应用的所提出的底物，用于通过溶胶 - 凝胶法制造Mn掺杂的锌铁氧体化合物。通过X射线衍射光谱在结构上，通过X射线衍射光谱进行制备的MNXZN（1-X）Fe 2 O 4，（x = 0.0,0.2,0.4,0.6,0.8）底物，并通过扫描电子显微镜进行形态学地研究。我们研究了微波范围内的光学和电介质特性，以评估新材料作为微波应用的介电基板。制备的柔性基板在微波频率范围内具有高介电介电常数和低介电损耗。对于概念证明，通过装载电磁辐射器来验证平坦和弯曲条件下的电磁性能。我们向低于-10 dB的反射系数的详细测量性能，第一次在操作带宽内的平均效率高于73％和高于1.5 dBi以上的平均最终增益。在平坦和弯曲条件下测量的稳定的全向辐射图案也证实了所提出的材料用作新的柔性介电基板的电位。

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  • 来源
    《RSC Advances》 |2016年第88期|共11页
  • 作者

    Rahman Ashiqur; Islam Mohammad Tariqul; Singh Mandeep Jit; Misran Norbahiah;

  • 作者单位

    UKM Space Sci Ctr ANGKASA Res Ctr Bldg Bangi 43600 Selangor Malaysia;

    UKM Fac Engn &

    Built Environm Dept Elect Elect &

    Syst Engn Bangi 43600 Selangor Malaysia;

    UKM Fac Engn &

    Built Environm Dept Elect Elect &

    Syst Engn Bangi 43600 Selangor Malaysia;

    UKM Fac Engn &

    Built Environm Dept Elect Elect &

    Syst Engn Bangi 43600 Selangor Malaysia;

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  • 正文语种 eng
  • 中图分类 化学;
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