Influence of electric fields on the magnetic susceptibility of magnetic colloidal systems

IF 2.1 4区材料科学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of Nanoparticle Research Pub Date : 2024-10-01 DOI:10.1007/s11051-024-06142-9

Yury I. Dikansky, Dmitry V. Gladkikh, Dmitry S. Dorozhko

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Abstract

The influence of electric fields on the magnetic susceptibility of magnetic colloids of different types was investigated. Dependences of the dynamic magnetic susceptibility of a kerosene-based homogeneous magnetic colloid on the intensity of the applied constant electric field were studied. Some features of such dependences were found at the additional impact of a constant magnetic field. The magnetic susceptibility of a magnetic colloid with a well-developed system of microsized droplet aggregates was also investigated under the action of a constant electric field as well as of an alternating electric field. Moreover, similar studies were carried out for a magnetic emulsion produced by emulsifying a kerosene-in-oil-based magnetic colloid. The peculiarities of the susceptibility of the considered systems were determined by structural changes which were observed and analyzed by optical microscopy. The results obtained were validated, and qualitative agreement between the experimentally obtained dependences and those calculated theoretically based on the models used was shown.

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电场对磁性胶体系统磁感应强度的影响

研究了电场对不同类型磁性胶体磁感应强度的影响。研究了煤油基均相磁性胶体的动态磁感应强度与外加恒定电场强度的关系。在恒定磁场的额外影响下，发现了这种依赖性的一些特征。在恒定电场和交变电场的作用下，还研究了具有发达的微小液滴聚集系统的磁性胶体的磁感应强度。此外，还对油基煤油磁性胶体乳化产生的磁性乳液进行了类似研究。通过光学显微镜观察和分析的结构变化确定了所考虑系统的电感特性。所获得的结果得到了验证，实验获得的相关性与根据所使用的模型理论计算的相关性之间显示出定性的一致性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.