链状磁性纳米颗粒磁化特性的数值研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-12-23 DOI:10.1109/LMAG.2022.3231819

Haochen Zhang;Yi Sun;Zhongzhou Du;Teruyoshi Sasayama;Takashi Yoshida

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引用次数: 0

摘要

这项工作研究了链状磁性纳米颗粒（CMNP），这是一种具有偶极-偶极相互作用的磁性纳米颗粒，其中单个纳米颗粒连接形成链状结构。我们使用Landau–Lifshitz–Gilbert方程对CMNP和单核MNP（SMNP）的交流磁化特性进行了数值分析。由于磁偶极-偶极相互作用，在一定的激发场下，CMNP的磁化强度大约是SMNP的10倍。因此，具有链状结构的MNP有望在医学应用中具有增强的磁化特性和更好的性能。此外，研究发现，连接10个或更多尺寸约为10–12 nm的磁芯的CMNP可以预期更强的磁化强度。

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Numerical Study on the Magnetization Characteristics of Chainlike Magnetic Nanoparticles

This work investigated chainlike magnetic nanoparticles (CMNPs), which are a type of magnetic nanoparticle (MNP) with a dipole–dipole interaction in which individual nanoparticles are connected to form a chainlike structure. We numerically analyzed the ac magnetization characteristics of the CMNP and the single-core MNP (SMNP) using the Landau–Lifshitz–Gilbert equation. Owing to the magnetic dipole–dipole interaction, the magnetization of the CMNP is approximately 10 times that of the SMNP under a certain excitation field. MNPs with a chainlike structure are thus expected to have enhanced magnetization characteristics and better performance in medical applications. Additionally, it was found that stronger magnetization can be expected from a CMNP connecting 10 or more magnetic cores with a size of approximately 10–12 nm.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.