Majid Niaz Akhtar, Muhammad Shahid, Raqiqa Tur Rasool, Fatimah Mohammed A. Alzahrani, Sagr Alamri, Abdullah Almohammedi, Shagufta Gulbadan, M. Irfan, Ghulam Abbas Ashraf, M.S. Al-Buriahi, Muhammad Azhar Khan
Materials with exceptional absorption properties have attracted attention due to their extensive applications in information processing devices, RAMs, and stealth communication fields. The good absorption capability of the W-type hexagonal ferrite (WHFs) makes them suitable materials for EMI interference and absorption applications. Yb3+-doped SrMg2(WHFs) of the composition SrMg2Fe16-xYbxO27, where x values are 0.00, 0.04, 0.08, and 0.12, were fabricated using the sol-gel auto-ignition process. XRD, FTIR, XPS, and dielectric properties of Yb3+-doped SrMg2WHFs were evaluated. The XRD results validated the single-phase structure of the Yb3+-doped SrMg2WHFs. The lattice parameters' a and 'c' were augmented with Yb3+doping. The c/a ratio substantiates the Yb3+-doped SrMg2hexagonal ferrite (WHFs) W phase. Physical characteristics were also computed, including bulk density, X-ray density, dislocation density, microstrain, lattice strain, and surface area. The crystallite size calculated from Scherrer's relation is in the 60.78–70.98 nm range, whereas 67.98–75.42 nm values of crystallite size were determined from W-H plots. FTIR revealed several bands ranging from 430 cm−1to 4000 cm−1. The ferrite phase in Yb3+-doped SrMg2W-type hexagonal ferrite (WHFs) was examined within the frequency range of 539–586 cm−1. XPS analysis verifies the presence of metal ions, including Sr, Mg, Yb, Fe, and O, in their respective valence states. The dielectric characteristics and mobility range of charge carriers were assessed within the 1–6 GHz frequency spectrum. Cole-Cole plots elucidated the conduction mechanism in the prepared samples. The dielectric loss, electric modulus, and impedance of doped WHFs were assessed. Measurements of reflection loss illustrated the microwave absorption characteristics and mobility of charge carriers. An RL of −19.74 dB was observed for x = 0.12, while the RL peak of −12.65 dB was recorded for x = 0.08 at 1.21 GHz. Yb3+-doped SrMg2WHFS are highly appropriate for enhancing the EM absorption capability in the S and C-band regimes. © 2025 Elsevier Ltd and Techna Group S.r.l. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan; Mechanical and Industrial Engineering Department, Engineering Faculty, Universitas Negeri Malang, 65145, Indonesia; Low Dimensional Materials Research Center, Khazar University in, Baku, Azerbaijan; Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P .O. Box 84428, Riyadh, 11671, Saudi Arabia; Department of Mechanical Engineering, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia; Center for Engineering and Technology Innovations, King Khalid University, Abha, 61421, Saudi Arabia; Department of Physics, Faculty of Science, Islamic University of Madinah, Madinah, Saudi Arabia; Department of Physics, Sakarya University, Sakarya, Turkey
