2026-10-19T00:02:43Zhttps://ebyu-rdlopen.rawdatalibrary.net/oai/requestoai:ebyu-rdlopen.rawdatalibrary.net:ebyu/127242026-10-18T20:43:09Zopenairedrivercom_ebyu_10000col_ebyu_10001Effect of Mn and Zn doping on natural resonance frequency of strontium U-type hexaferrite and its performance as electromagnetic wave absorbersIsmail, IsmayadiMuhammad Zulkimi, Muhammad MisbahAzis, Raba'ah SyahidahMustaffa, Muhammad SyazwanHamidon, Mohd NizarErtugrul, MehmetYesilbag, Yasar OzkanTuzluca, Fatma NurHasan, Intan helinaOzturk, GokhanHasar, Ugur CemComplex permeabilityComplex permittivityReflection loss (RL)Strontium hexaferriteBall millingBinary alloysCircular waveguidesComplex networksElectric network analyzersFerriteIron compoundsMagnetocrystalline anisotropyStrontiumStrontium compoundsZincEffect of MnMn-dopingNatural resonance frequenciesReflection lossU-type hexaferriteZn dopingNatural frequenciesIn the present work, substitution of strontium U-type hexaferrite with the composition of Sr4Mn2-xZnxFe36O60 (x = 0.5,0.6,0.8, and 1.0) was prepared via high energy ball milling (HEBM) and sintered at 1100 °C. The phase, microstructure, magnetic, dielectric and electromagnetic wave absorbing properties of U-type strontium hexaferrite composites were measured using XRD, FESEM, and Vector Network Analyzer in the frequency range of 8–18 GHz (X-band and Ku-band). MnZn doping was found to shift the natural resonance of the materials by affecting its magnetocrystalline anisotropy. The reflection loss (RL) indicated that the composite possessed good microwave-absorbing properties with U-type strontium hexaferrite ( Sr4Mn2-xZnxFe36O60) of x = 0.8 resulted in high minimum RL value for all thickness of 1 mm and two peaks at approximately − 32.50 and − 41.50 dB at 14.00 and 15.60 GHz, with bandwidth of 0.60 and 0.80 GHz for losses less than − 10 dB. © 2021 Elsevier B.V.Elsevier Ltd2022Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/12724https://doi.org/10.1016/j.jallcom.2021.1632460925-8388enJournal of Alloys and Compoundsinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/12724