Effect of rare earth Nd^(3+)doping contents on physical,structural,and magnetic properties of Co-Ni spinel ferrite nanoparticles  

作　　者：Junjiao Li Muhammad Yousaf Qaisar Hayat Muhammad Akbar Asma Noor MAK Yousaf Shah Fenghua Qi Yuzheng Lu 

机构地区：[1]Department of Electronic and Engineering,Nanjing Vocational Institute of Mechatronic Technology,Nanjing,211306,China [2]Energy Storage Joint Research Centre,School of Energy and Environment,Southeast University,Nanjing,210096,China [3]Shenzhen Key Laboratory of Laser Engineering,Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen,518060,China [4]Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials,Faculty of Physics and Electronic Science,Hubei University,Wuhan,430062,China [5]College of Electronic and Engineering,Nanjing Xiaozhuang University,Nanjing,211171,China

出　　处：《Journal of Rare Earths》2023年第11期1746-1753,I0004,共9页稀土学报（英文版）

基　　金：Project supported by the Industry-University-Research Cooperation Project of Jiangsu Province in China (BY2021057);the Qing Lan Project of Jiangsu Province (BY2021011);Jiangsu Province Higher Vocational College Young Teachers Enterprise Practice Training Funding Project (2021QYSJ048)。

摘　　要：Rare earth(RE)low doping has a significant influence on the structural,morphological,and magnetic properties of spinel ferrite nanoparticles.Therefore,rare earth neodymium(Nd)oxide was fully doped into spinel ferrite with a composition of Co_(0.80)Ni_(0.20)Nd_xFe_(2-x)O_4(x=0.0,0.05,0.10,and 0.15)using the sol-gel auto combustion method.Structural analysis of the synthesized samples with low doping of Nd using X-ray diffraction(XRD)and Rietveld refinements reveals a pure single-phase cubic structure,while the second phase appears with increasing content of Nd^(3+)at x=0.10 and 0.15.Scanning electron microscopy(SEM)and high-resolution transmission electron microscopy(HR-TEM)show well-shaped spherical grains within the nanometer range of the pure Co_(0.80)Ni_(0.20)Fe_(2)O_(4) sample,while larger grains with the presence of agglomeration are observed with doping of Nd^(3+)into the spinel ferrite nanoparticles.The magnetic parameters,i.e.,saturation magnetization M_s,remanence and magnetic moments exhibit decreasing trend with Nd^(3+)doping and M_s values are in 65.69 to 53.34 emu/g range.The coercivity of the Nd-doped Co-Ni spinel ferrite sample was calculated to be 1037.76 to~827.24 Oe.This work demonstrates remarkable improvements in the structural and magnetic characteristics of Nddoped Co-Ni spinel ferrite nanoparticles for multiple versatile applications.

关 键 词：Co-Ni spinel ferrites Rare earth Nd^(3+)doping Structural analysis Magnetic evaluations 

分 类 号：TG1[金属学及工艺—金属学]