Abstract

Changes in the structure and properties of the Ni_1 – xCu_xFe₂O₄ ferrites-spinel magnetic nanoparticles depending on the Cu ion concentration (0 ≤ x ≤ 1.0) have been studied using Mossbauer spectroscopy. It has been found that, with the increasing of the Cu ion concentration, the structure of nanoparticles changes from the structure of reverse spinel (NiFe₂O₄) to that of mixed spinel (CuFe₂O₄). It has been shown that the hydrothermal synthesis method makes it possible to obtain single-phase nanoscale particles with a very narrow size distribution and ideal magnetic ordering, which are promising for biomedical applications. The relationship between the distribution of cations on sublattices, the value of the inversion parameter, and the Cu ion concentration has been established.

中文翻译：

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Ni 1 – x Cu x Fe 2 O 4纳米粒子的结构转变取决于铜离子的数量

摘要

结构的变化与Ni的性质_{- 1  X}的Cu _X的Fe _2个ö ₄（0≤取决于铜离子浓度铁氧体尖晶石磁性纳米颗粒X ≤1.0）一直在使用穆斯堡尔谱分析。已经发现，随着Cu离子浓度的增加，纳米颗粒的结构从反向尖晶石（NiFe ₂ O ₄）结构变为混合尖晶石（CuFe ₂ O _{4）结构。}）。已经表明，水热合成方法使得获得具有非常窄的尺寸分布和理想的磁有序性的单相纳米级颗粒成为可能，这对于生物医学应用是有前途的。已经建立了阳离子在亚晶格上的分布，反演参数的值和Cu离子浓度之间的关系。