Structural,morphological and magnetic properties of(Ni_(0.5)Co_(0.5))[Ga_(x)Gd_(x)Fe_(2-2x)]O_(4)nanoparticles prepared via sonochemical approach  

作　　者：Y.Slimani M.A.Almessiere A.Demir Korkmaz A.Baykal M.A.Gondal H.Güngünes Sagar E.Shirsath A.Manikandan 

机构地区：[1]Department of Biophysics,Institute for Research and Medical Consultations(IRMC),Imam Abdulrahman Bin Faisal University,P.O.Box 1982,Dammam,31441,Saudi Arabia [2]Department of Physics,College of Science,Imam Abdulrahman Bin Faisal University,P.O.Box 1982,Dammam,31441,Saudi Arabia [3]Department of Chemistry,Istanbul Medeniyet University,Uskudar,Istanbul,34700,Turkey [4]Department of Nanomedicine Research,Institute for Research and Medical Consultations(IRMC),Imam Abdulrahman Bin Faisal University,P.O.Box 1982,Dammam,31441,Saudi Arabia [5]Laser Research Group,Physics Department,IRC-Hydrogen&Energy Storage,King Fahd University of Petroleum&Minerals,Dhahran,31261,Saudi Arabia [6]K.A.CARE Energy Research and Innovation Center,King Fahd University of Petroleum&Minerals,Dhahran 31261,Saudi Arabia [7]Department of Physics,Hitit University,19030,Cevre Yolu Bulvar,Corum,Turkey [8]School of Materials Science and Engineering,University of New South Wales,Kensington,Sydney,NSW,2052,Australia [9]Department of Chemistry,Bharath Institute of Higher Education and Research(BIHER),Bharath University,Chennai,Tamil Nadu,600073,India [10]Center for Catalysis and Renewable Energy,Bharath Institute of Higher Education and Research(BIHER),Chennai,Tamil Nadu,600073,India

出　　处：《Journal of Rare Earths》2023年第4期561-571,共11页稀土学报（英文版）

摘　　要：The impact of Ga^(3+)and Gd^(3+)co-substitution on different types of behavior of Ni-Co nanospinel ferrites(NSFs),(Ni_(0.5)Co_(0.5))[Ga_(x)Gd_(x)Fe_(2-2x)]O_(4)(0.000≤x≤0.025),was investigated.NSFs were fabricated through ultrasound irradiation.The structure,composition,and spherical morphology of all products were verified by numerous characterization techniques such as X-ray diffraction(XRD),scanning and transmission electron microscopes(SEM and TEM),and selected area electron diffraction(SAED).Mossbauer spectra are composed of two ferromagnetic sextets and one paramagnetic doublet.These spectra were fitted to extract hyperfine parameters of the doped samples.Both sublattices'hyperfine magnetic field decreases with substitution.The isomer shift values show that the Mossbauer spectra are composed of magnetic Fe^(3+)sextets.The magnetization measurements at variable magnetic field(M-H)were investigated via a vibrating sample magnetometer(VSM)at temperatures(T)from 300 to 10 K.All NSFs disclose ferrimagnetic behavior at both 300 and 10 K at which they are soft and hard,respectively.We determined that the remanence magnetization(M_(r)),saturation magnetization(M_(s)),and magneton number(n_(B))decrease with increasing Ga^(3+)and Gd^(3+)ions contents.The reduction in these values is predominantly recognized to be the impact of cation redistribution and surface spins on tetrahedral(T_(d))and octahedral(O_(h))sites.As the Ga^(3+)and Gd^(3+)contents increase,the coercivity(H_(c))is also found to decrease.

关 键 词：Spinel ferrites Rare earth substitution Sonochemical synthesis Mossbauer analysis Magnetic properties 

分 类 号：TB34[一般工业技术—材料科学与工程]