Magnetite nanoparticles doped with rare earth ions: synthesis, structural, and magnetic properties

IF 2.6 4区材料科学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of Nanoparticle Research Pub Date : 2025-07-04 DOI:10.1007/s11051-025-06379-y

A. V. Rutkauskas, O. N. Lis, S. E. Kichanov, E. V. Lukin, B. A. Abdurakhimov, G. S. Rymski, A. L. Zhaludkevich, I. I. Makoed, D. P. Kozlenko, A. Mutali

{"title":"Magnetite nanoparticles doped with rare earth ions: synthesis, structural, and magnetic properties","authors":"A. V. Rutkauskas, O. N. Lis, S. E. Kichanov, E. V. Lukin, B. A. Abdurakhimov, G. S. Rymski, A. L. Zhaludkevich, I. I. Makoed, D. P. Kozlenko, A. Mutali","doi":"10.1007/s11051-025-06379-y","DOIUrl":null,"url":null,"abstract":"<div><p>Taking into account the practical significance of magnetite nanoparticles, several nanostructured magnetite samples with doping of 2.5% Sm, Dy, La, and Lu rare earth ions were synthesized using the co-precipitation method. The structural and magnetic properties of the obtained doped nanoparticles were investigated in detail using transmission electron microscopy, X-ray diffraction, small-angle X-ray scattering, and magnetic measurements. All the doped nanostructured magnetite samples have a cubic phase with spinel crystal structure <i>Fd</i> <span>\\(\\overline{3 }\\)</span> <i>m</i>; a nanoparticle size is ranging from 20 to 32 nm. Changes in the characteristic Fe–O bond lengths indicated that the doping rare earth ions mainly occupy octahedral sites in the oxygen unit. The size of the nanoparticles depends on the type of doped rare earth due to difference in ionic radius. Neutron diffraction data indicated that the magnetic structure of doped magnetite nanoparticles is ferrimagnetic. The magnetic measurements showed a superparamagnetic state in all the doped magnetite nanoparticles. It is assumed that noticeable changes in the structural and magnetic properties of magnetite nanoparticles compared to bulk matter are primarily associated with a defect-rich structure on the surface of those nanoparticles and the effect of rare earth ions doping on it.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"27 7","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nanoparticle Research","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11051-025-06379-y","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Taking into account the practical significance of magnetite nanoparticles, several nanostructured magnetite samples with doping of 2.5% Sm, Dy, La, and Lu rare earth ions were synthesized using the co-precipitation method. The structural and magnetic properties of the obtained doped nanoparticles were investigated in detail using transmission electron microscopy, X-ray diffraction, small-angle X-ray scattering, and magnetic measurements. All the doped nanostructured magnetite samples have a cubic phase with spinel crystal structure Fd \(\overline{3 }\) m; a nanoparticle size is ranging from 20 to 32 nm. Changes in the characteristic Fe–O bond lengths indicated that the doping rare earth ions mainly occupy octahedral sites in the oxygen unit. The size of the nanoparticles depends on the type of doped rare earth due to difference in ionic radius. Neutron diffraction data indicated that the magnetic structure of doped magnetite nanoparticles is ferrimagnetic. The magnetic measurements showed a superparamagnetic state in all the doped magnetite nanoparticles. It is assumed that noticeable changes in the structural and magnetic properties of magnetite nanoparticles compared to bulk matter are primarily associated with a defect-rich structure on the surface of those nanoparticles and the effect of rare earth ions doping on it.

查看原文本刊更多论文

掺杂稀土离子的磁铁矿纳米颗粒：合成、结构和磁性能

考虑到磁铁矿纳米颗粒的实际意义，几种纳米结构的磁铁矿样品掺杂量为2.5% Sm, Dy, La, and Lu rare earth ions were synthesized using the co-precipitation method. The structural and magnetic properties of the obtained doped nanoparticles were investigated in detail using transmission electron microscopy, X-ray diffraction, small-angle X-ray scattering, and magnetic measurements. All the doped nanostructured magnetite samples have a cubic phase with spinel crystal structure Fd \(\overline{3 }\) m; a nanoparticle size is ranging from 20 to 32 nm. Changes in the characteristic Fe–O bond lengths indicated that the doping rare earth ions mainly occupy octahedral sites in the oxygen unit. The size of the nanoparticles depends on the type of doped rare earth due to difference in ionic radius. Neutron diffraction data indicated that the magnetic structure of doped magnetite nanoparticles is ferrimagnetic. The magnetic measurements showed a superparamagnetic state in all the doped magnetite nanoparticles. It is assumed that noticeable changes in the structural and magnetic properties of magnetite nanoparticles compared to bulk matter are primarily associated with a defect-rich structure on the surface of those nanoparticles and the effect of rare earth ions doping on it.

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Nanoparticle Research 工程技术-材料科学：综合

CiteScore

4.40

自引率

4.00%

发文量

198

审稿时长

3.9 months

期刊介绍： The objective of the Journal of Nanoparticle Research is to disseminate knowledge of the physical, chemical and biological phenomena and processes in structures that have at least one lengthscale ranging from molecular to approximately 100 nm (or submicron in some situations), and exhibit improved and novel properties that are a direct result of their small size. Nanoparticle research is a key component of nanoscience, nanoengineering and nanotechnology. The focus of the Journal is on the specific concepts, properties, phenomena, and processes related to particles, tubes, layers, macromolecules, clusters and other finite structures of the nanoscale size range. Synthesis, assembly, transport, reactivity, and stability of such structures are considered. Development of in-situ and ex-situ instrumentation for characterization of nanoparticles and their interfaces should be based on new principles for probing properties and phenomena not well understood at the nanometer scale. Modeling and simulation may include atom-based quantum mechanics; molecular dynamics; single-particle, multi-body and continuum based models; fractals; other methods suitable for modeling particle synthesis, assembling and interaction processes. Realization and application of systems, structures and devices with novel functions obtained via precursor nanoparticles is emphasized. Approaches may include gas-, liquid-, solid-, and vacuum-based processes, size reduction, chemical- and bio-self assembly. Contributions include utilization of nanoparticle systems for enhancing a phenomenon or process and particle assembling into hierarchical structures, as well as formulation and the administration of drugs. Synergistic approaches originating from different disciplines and technologies, and interaction between the research providers and users in this field, are encouraged.