Effect of NiZn Ferrite Nanoparticles upon the Structure and Magnetic and Gyromagnetic Properties of Low-Temperature Processed LiZnTi Ferrites

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• 作者：Tingchuan Zhou ; Dainan Zhang ; Lijun Jia ; Feiming Bai ; Lichuan Jin ; Yulong Liao ; Tianlong Wen ; Cheng Liu ; Hua Su ; Ning Jia ; Zongliang Zheng ; Vincent G. Harris ; Huaiwu Zhang ; Zhiyong Zhong
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：June 11, 2015
• 年：2015
• 卷：119
• 期：23
• 页码：13207-13214
• 全文大小：509K
• ISSN：1932-7455

文摘

NiZn ferrite nanoparticles (2鈥?0 wt %) of composition Ni_0.4Zn_0.6Fe₂O₄ were introduced into LiZnTi ferrite of composition Li_0.42Zn_0.27Ti_0.11Fe_2.2O₄ and sintered at a temperature of 920 掳C for 2 h, well below that of the Ag melting point. Here, LiZnTi ferrites were prepared by a solid-state reaction method, and NiZn ferrite nanoparticles were fabricated by a hydrothermal chemical technique at 180 掳C. A low ferromagnetic resonance (FMR) line width, low coercivity, and high magnetic moment were achieved after refinement of the heat treatment conditions of the mixture. Riveted full profile refinement of the X-ray powder diffraction patterns and analysis of M枚ssbauer spectra were employed to study the structure and caption distribution. The results confirm a pure spinel phase after processing. A narrow FMR line width of 152.5 Oe, a reduced coercivity of 132.9 A/m, and an improved saturation magnetization of 74.23 emu/g were obtained by way of the addition of 8 wt % NiZn ferrite nanoparticles.