Numerical Study on the Magnetization Characteristics of Chainlike Magnetic Nanoparticles

被引：0

作者：

Zhang, Haochen ^{[1
]}

Sun, Yi ^{[1
]}

Du, Zhongzhou ^{[2
]}

Sasayama, Teruyoshi ^{[1
]}

Yoshida, Takashi ^{[1
]}

机构：

[1] Kyushu Univ, Dept Elect & Elect Engn, Fukuoka 8190395, Japan

[2] Zhengzhou Univ Light Ind, Sch Comp & Commun Engn, Zhengzhou 450002, Peoples R China

来源：

IEEE MAGNETICS LETTERS | 2023年 / 14卷

基金：

日本学术振兴会;

关键词：

Magnetization; Magnetic cores; Magnetic fields; Magnetic resonance imaging; Saturation magnetization; Magnetic nanoparticles; Magnetic hysteresis; Nanomagnetics; chainlike magnetic nanoparticles; Landau-Lifshitz-Gilbert equation; dipole-dipole interaction;

D O I：

10.1109/LMAG.2022.3231819

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页数：4

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