Effect of In³⁺ substitution on structural and magnetic properties of Ni ferrite nanoparticles

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• 作者：Fanbin Meng ; Xueni Shang ; Wei Zhang ; ^{wzhang@hebut.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Yujie Zhang
• 关键词：Nickel ferrite ; Indium substitution ; Structural properties ; Magnetism
• 刊名：Physica B: Physics of Condensed Matter
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：504
• 期：Complete
• 页码：69-73
• 全文大小：1088 K

文摘

NiIn_xFe_2−xO₄ (x=0.0, 0.1, 0.2, 0.3, 0.4) ferrite nanoparticles have been synthesized by sol-gel autocombustion technique. The effect of In³⁺ substitution on the structural and magnetic properties of nickel ferrite has been analyzed by X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR), Field emission scanning electron microscopy (FESEM) and Vibrating sample magnetometer (VSM). The XRD results confirmed the formation of single cubic spinel phase for 0≤x≤0.3$0\le x\le 0.3$ and the appearance of secondary phase of In₂O₃ for x=0.4. The lattice parameter increases (from 8.3152 to 8.4336 Å) with indium content. The FTIR results illustrated that the absorption intensity of peak at about 594 cm⁻¹ increases with increasing the In³⁺ ions. The saturation magnetization increases and then decreases while the coercivity decreases along with In³⁺substitution. The maximal saturation magnetization emerged at the composition of NiIn_0.2Fe_1.8O₄ (42.111 emu/g).