分步沉淀法制备固溶体$\mathbf{Ni_{1-x}Zn_{x}Fe_{2}O_{4}}$的磁性能

2022 IEEE 41st International Conference on Electronics and Nanotechnology (ELNANO) Pub Date : 2022-10-10 DOI:10.1109/ELNANO54667.2022.9926761

O. V’yunov, O. Fedorchuk, T. Plutenko, S. Solopan

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引用次数: 0

摘要

以金属硝酸盐水溶液为原料，采用分步沉淀法合成了镍锌铁氧体固溶体$\mathbf{Ni_{1-x}Zn_{x}Fe_{2}O_{4}}$。在$800^{\circ}\ mathm {C}$的温度下热处理2小时，得到了单相尖晶石铁素体晶体。结果表明，锌含量的增加导致纳米颗粒尺寸的增大。采用Le Bail法测定铁素体颗粒的晶格参数，发现晶格参数随Zn含量的增加而增大。$\mathbf{Ni_{1-x}Zn_{x}Fe_{2}O_{4}}$系统的磁化强度在$x=0.45$处达到最大值。产生非单调磁化行为的原因是材料磁性结构中可互换相互作用的相互关系发生了变化。

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Magnetic Properties of Solid Solutions $\mathbf{Ni_{1-x}Zn_{x}Fe_{2}O_{4}}$ Prepared by Stepwise Precipitation

Solid solutions of nickel-zinc ferrites, $\mathbf{Ni_{1-x}Zn_{x}Fe_{2}O_{4}}$, were synthesized by stepwise precipitation from aqueous solutions of metals nitrates. Single-phased crystalline spinel ferrites are obtained after the heat treatment at $800^{\circ}\mathrm{C}$ for 2 hours. It was found that the increase in zinc content leads to an increase in the size of nanoparticles. Le Bail method was used to determine lattice parameters of ferrite particles, it was found, that crystal lattice parameters increase with Zn content. Magnetization in the $\mathbf{Ni_{1-x}Zn_{x}Fe_{2}O_{4}}$ system passes through the maximum at $x=0.45$. The reason for the nonmonotonic behavior of magnetization is a change in the interrelation of superchangeable interactions in the magnetic structure of the material.

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2022 IEEE 41st International Conference on Electronics and Nanotechnology (ELNANO)

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