首页|Exploring the electromagnetic shielding behavior of lanthanum doped calcium nanoferrites

Exploring the electromagnetic shielding behavior of lanthanum doped calcium nanoferrites

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
The present study focuses on the synthesis and characterization of lanthanum(La3+)-doped calcium nanoferrites(CaLaxFe2-xO4;x=0.025,0.050,0.075 and 0.100)using the sonochemical method.Various techniques were employed to analyze the effect of La3+infusion.Raman spectroscopy confirms the presence of active A1g,T2g and Eg modes in the CaLaxFe2-xO4 nanoferrite,indicating the formation of an active ferrite system.The introduction of La3+doping results in a significant increase in the band gap energy,rendering the nanoferrites insulating(3.23-3.57 eV).At higher frequencies,the impedance studies reveal minimal losses and better AC conductivity,pointing to improved dielectric characteristics.At higher frequencies,the Q-factor of La-doped calcium nanoferrites shows lower electromagnetic losses.The M-H curve exhibits ferromagnetic behavior,with La3+-doped calcium nanoferrites displaying a saturation magnetization ranging from 12.72 to 18.10 emu/g.The incorporation of La3+also induces enhanced electrical polarization,leading to notable dielectric loss and increased absorption of electromagnetic waves.Consequently,these CaLaxFe2-xO4 nanoferrites demonstrate potential as effective microwave ab-sorbers across a wide frequency range,with significant shielding absorption observed at 8.8-9.1 GHz.

NanoferritesStructural propertiesRare earthsDielectricMagnetismMicrowave absorption

E.Ahilandeswari、K.Sakthipandi、R.Rajesh Kanna、G.Rajkumar、B.Ganesh Babu、S.Arunmetha、Aslam Hossain、P.Sakthivel、V.Rajendran、M.Srinidhi Raghavan

展开 >

Department of Physics,SRM TRP Engineering College,Tiruchirappalli,621105,Tamil Nadu,India

Department of Electronics and Communication Engineering,M.Kumarasamy College of Engineering,Karur,639113,Tamil Nadu,India

Department of Physics,Easwari Engineering College,Chennai,600089,Tamil Nadu,India

Department of Mechanical Engineering,SRM TRP Engineering College,Tiruchirappalli,621105,Tamil Nadu,India

Centre for Advanced Energy Studies,Department of Electronics and Communication Engineering,Koneru Lakshmaiah Education Foundation,Guntur,Andhra Pradesh,522502,India

Smart Materials Research Institute,Southern Federal University,Sladkova 178/24,344090,Rostov-on-Don,Russia

Centre for Materials Science,Department of Physics,Science and Humanities,Faculty of Engineering,Karpagam Academy of Higher Education,Coimbatore,641021,Tamil Nadu,India

Centre for Nanotechnology,Academy of Maritime Education and Training(Deemed to be University),Chennai,603112,Tamil Nadu,India

Department of Chemistry and Centre for Nano-Materials and Displays,B.M.S.College of Engineering,Bengaluru,560019,Karnataka,India

展开 >

Strategic Academic Leadership Program of the Southern Federal University

Priority 2030

2024

10.1016/j.jre.2023.11.002

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(11)