In this article, Pr–Mn substituted X-type hexagonal ferrite Sr_1–xPr_xCu₂Mn_yFe_28–yO₄₆ with concentrations of $x =0$ , 0.02, 0.06, 0.1 and $y =0$ , 0.1, 0.3, 0.5 were prepared by using cotton soaked method. The main intention of this article was to explain the microwave absorption phenomenon theoretically and to perceive the effect of Pr–Mn substitution on structural, magnetic, thermal, and microwave absorption properties of X-type hexagonal ferrites. Moreover, the fabrication of material suitable for microwave absorption devices, permanent magnets, and for recording media applications was also aimed in present investigation. The XRD patterns reveal that all the prepared samples possess X-type hexagonal structure. A gradual and slight increase in both lattice parameters “ $a$ ” and “ $c$ ” values was observed with Pr–Mn substitution. The metal–oxygen stretching (M–O) vibrations in the FTIR spectrum at a low frequency indicates the presence of single phase in synthesized material. The enhancement in magnetic properties (saturation magnetization, retentivity, and coercivity) has been observed with the substitution of Pr–Mn contents in pure ferrites. A maximum reflection loss (RL) of −27.21 dB at 11.891 GHz was attained by Pr–Mn-substituted ferrites and reflectivity results agree well with RL results. Microwave absorption property of this substituted material made it a potential candidate to be used in super high frequency (SHF) devices.

中文翻译：

---

棉浸法合成吸波X型六铁氧体纳米材料的理论与实验研究

在本文中，Pr-Mn 取代 X 型六方铁氧体 Sr _1-x Pr _x Cu ₂ Mn _y Fe _28-y O ₄₆的浓度为 $x =0$ , 0.02, 0.06, 0.1 和 $y =0$ 、0.1、0.3、0.5采用棉浸法制备。本文的主要目的是从理论上解释微波吸收现象，并了解 Pr-Mn 取代对 X 型六方铁氧体的结构、磁、热和微波吸收性能的影响。此外，本研究还旨在制造适用于微波吸收装置、永磁体和记录介质应用的材料。XRD图谱表明所有制备的样品都具有X型六方结构。两个晶格参数逐渐且略有增加“ $a$ “ 和 ” $c$ ” 值是用 Pr-Mn 取代观察到的。FTIR 光谱中低频的金属-氧伸缩 (M-O) 振动表明合成材料中存在单相。随着纯铁氧体中 Pr-Mn 含量的替代，已经观察到磁性能（饱和磁化强度、保持力和矫顽力）的增强。Pr-Mn 取代的铁氧体在 11.891 GHz 处获得了 -27.21 dB 的最大反射损耗 (RL)，反射率结果与 RL 结果非常吻合。这种替代材料的微波吸收特性使其成为用于超高频 (SHF) 设备的潜在候选材料。