Synthesis and Physicochemical Properties of Magnetic Fe3O4 Particles Doped with Gd(III)

IF 1.5 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Russian Journal of Inorganic Chemistry Pub Date : 2025-08-19 DOI:10.1134/S0036023625601242

Y. D. Mitskevich, M. M. Degtyarik, A. A. Kharchanka, M. V. Bushinsky, J. A. Fedotova

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Abstract

Magnetic Fe₃O₄ nanoparticles (NPs) were synthesized by alkaline precipitation from aqueous solutions of divalent and trivalent iron salts. Synthesis of Fe_3-xGd_xO₄ NPs (x = 0.05; 0.1) was performed by adding a calculated amount of Gd(NO₃)₃·6H₂O to the initial solution of iron salt mixture. The phase composition and magnetic properties of the synthesized powders were investigated by X-ray diffraction analysis, ⁵⁷Fe Mössbauer spectroscopy and vibration sample magnetometry at temperatures T = 7, 20 and 300 K. The investigations confirmed the formation of NPs of non-stochiometric Fe_3-δO₄ magnetite, as well as magnetite doped with Gd³⁺ ions. The correlation between the average diameter of NPs of the initial Fe_3-δO₄ powder and doped Fe_3-xGd_xO₄ powder and the salt used in the synthesis, as well as the concentration of Gd (x), respectively, was revealed.

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Gd（III）掺杂Fe3O4磁性粒子的合成及物理化学性质

以二价和三价铁盐水溶液为原料，采用碱性沉淀法合成了磁性Fe3O4纳米颗粒。在铁盐混合物初始溶液中加入计算量的Gd(NO3)3·6H2O，合成Fe3-xGdxO4 NPs （x = 0.05; 0.1）。在温度T = 7、20和300 K下，通过x射线衍射分析、57Fe Mössbauer光谱和振动样品磁强计研究了合成粉末的物相组成和磁性能。研究证实了非化学计量Fe3-δO4磁铁矿以及掺杂Gd3+的磁铁矿的NPs的形成。结果表明，初始Fe3-δO4粉末和掺杂Fe3- xgdxo4粉末的NPs平均直径分别与合成中使用的盐和Gd (x)浓度呈正相关。

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来源期刊

Russian Journal of Inorganic Chemistry 化学-无机化学与核化学

CiteScore

3.10

自引率

38.10%

发文量

237

审稿时长

3 months

期刊介绍： Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.