Structural,dielectric and magnetic properties of terbium doped strontium spinel ferrite(SrFe_(2)O_(4))synthesized by sol-gel method  

作　　者：Rifat Shaheen Hafeez Ullah M.M.Moharam Ahmad M.Saeedi Ebraheem Abdu Musad Saleh Muhammad Ijaz Adel A.El-Zahhar Gamil A.A.M.Al-Hazmi Sana Ullah Asif Hafiz Muhammad Tahir 

机构地区：[1]Institute of Physics,Gomal University,Dera Ismail Khan,29220,KP,Pakistan [2]Department of Chemistry,College of Arts and Sciences,Prince Sattam Bin Abdulaziz University,Wadi Al-Dawasir11991,Saudi Arabia [3]Chemical and Electrochemical Processing Department,Central Metallurgical Research and Development Institute(CMRDI),PO.Box 87,Helwan,11421,Egypt [4]Department of Physics,Faculty of Applied Science,Umm AL-Qura University,Makkah,24382,Saudi Arabia [5]Department of Chemistry,College of Science,King Khalid University,P.0.Box 9004,Abha,61413,Saudi Arabia [6]School of Materials and Energy,Yunnan University,Kunming,650091,China [7]Department of Physics Govt.Graduate College Taunsa,Sharif,32100,Pakistan

出　　处：《Journal of Rare Earths》2025年第2期337-344,I0004,共9页稀土学报(英文版)

基　　金：the Deanship of Scientific Research at King Khalid University for funding this work through Large Groups Project under(RGP.2/111/44)。

摘　　要：In this research work,sol-gel technique was employed to prepare the strontium based spinel ferrite nanoparticles(SrFe_(2)O_(4))with different ratios of terbium(Tb).Different characterization techniques were used to investigate the structural,morphological,dielectric and magnetic properties of the prepared samples.X-ray diffraction(XRD)result suggests that face-centered cube spinel nanocrystalline structure is formed.Crystallite size of the SrFe_(2)O_(4)decreases with rising of Tb ratio.The morphology,shape and size of the SrFe_(2)O_(4)were examined by scanning electron microscopy(SEM)analysis and results reveal inhomogeneous distributions of the nanostructures with high agglomeration.The electrical resistivity of the SrFe_(2)O_(4)increases with rising of Tb ratio,which is confirmed from the cyclic voltammetry.It is observed that dielectric constant of all the samples decreases with the increasing frequency range.It is determined that the dielectric constants of the spinel ferrites are frequency dependent and decrease with increasing the frequency of applied electric field.The magnetic behavior of SrFe_(2)O_(4)with different ratios of Tb was studied and it is found that the saturation magnetization values of samples decrease with increase in the substitution of Tb^(3+)at octahedral sites for Fe^(3+).This decrease in the values of M_(s) is also attributed to spin at surface of nanoparticles.

关 键 词：SOL-GEL Structural properties Dielectric properties Magnetic properties Spinel ferrites Rare earths 

分 类 号：O61[理学—无机化学]