期刊
CERAMICS INTERNATIONAL
卷 48, 期 22, 页码 33323-33331出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.07.275
关键词
Nanoparticles; Spinel ferrite; Gd; Sol-gel; Raman spectra; FC-ZFC
The structural and magnetic properties of Gd doped CoFe2O4 nanoparticles synthesized by sol-gel method have been studied, showing their potential applications in various fields.
The structural and magnetic properties of sol-gel synthesized Gd doped (x = 0.00 to 0.15) CoFe2O4 nanoparticles (NPs) have been studied. The x-ray diffraction (XRD) and FTIR spectroscopy along with Raman spectra confirmed the formation of face centered cubic inverse spinel structure. TEM images showed the NPs are well-dispersed with average particle size 30 nm. Room temperature magnetic measurement showed the value of coercivity fluctuates from 353 Oe to 1060 Oe for different % of Gd content. The maximum coercivity, saturation magne-tization, magnetic moment, magnetic anisotropy, remnant magnetization found for 0.03% Gd content are 1060.19 Oe, 77.53 emu/gm, 3.29 mu, 4.11 x 104 erg/cm3, 32.38 emu/gm, respectively. The large value of coercivity indicated that the interparticle interactions and crystalline anisotropy are high. Thus CoFe2-xGdxO4 magnetic NPs might be a potential candidate for data processing, automotive and telecommunications.
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