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Structural, magnetic, electrical and microwave properties of spinel ferrites
Journal of Rare Earths ( IF 5.2 ) Pub Date : 2021-05-12 , DOI: 10.1016/j.jre.2021.04.015
Salma Aman 1 , Naseeb Ahmad 1 , M.H. Alhossainy 2 , Hind Albalawi 3 , Manal Morsi 4 , Tahani I. Al-Muhimeed 5 , Abeer A. AlObaid 5
Affiliation  

The ferrite series having formulation SrYbyFe2–yO4 (y = 0.00 to 0.10) were synthesized via the sol–gel procedure. The involvement of the yttrium in the base produces several changes in the structural, magnetic, and electrical performance of the system. Investigation of structural parameters was done through X-ray diffraction. All samples have cubic structures confirmed from X-ray diffraction. The coercivity of sample enlarges with the involvement of Yb-ions while their saturation and remanence magnetization values drop. When the concentration of Yb-ion increases in the lattice, the real and imaginary values of permittivity reduce. The increased content of Yb enhances the impedance value. The analysis of the M vs H loop was finished under the fixed range of −2 to +2 kOe. By using 0.5–12 GHz frequency, the microwave measurements of all the sample were performed. The dispersion of frequency of ferrites is responsible for the natural magnetic resonance phenomenon and the domain wall pinning. The evaluated features of synthesized sample show their appropriateness for microwave absorption appliances.



中文翻译:

尖晶石铁氧体的结构、磁性、电学和微波特性

通过溶胶-凝胶法合成具有配方 SrYb y Fe 2– y O 4 ( y  = 0.00 到 0.10) 的铁氧体系列。钇在碱基中的参与会在系统的结构、磁性和电性能方面产生一些变化。结构参数的研究是通过 X 射线衍射完成的。所有样品都具有由 X 射线衍射证实的立方结构。样品的矫顽力随着 Yb 离子的参与而增大,而它们的饱和度和剩磁值下降。当晶格中镱离子浓度增加时,介电常数的实值和虚值减小。Yb含量的增加提高了阻抗值。的分析M vs H循环在-2 到+2 kOe 的固定范围内完成。通过使用 0.5-12 GHz 频率,对所有样品进行微波测量。铁氧体频率的分散是造成自然磁共振现象和畴壁钉扎的原因。合成样品的评价特征表明其适用于微波吸收器具。

更新日期:2021-05-12
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