中国物理B ›› 2021, Vol. 30 ›› Issue (1): 17503-.doi: 10.1088/1674-1056/abb311

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  • 收稿日期:2020-07-15 修回日期:2020-08-20 接受日期:2020-08-27 出版日期:2020-12-17 发布日期:2021-01-04

Effects of dipolar interactions on the magnetic hyperthermia of Zn0.3Fe2.7O 4 nanoparticles with different sizes

Xiang Yu(俞翔)†, Yan Mi(米岩)†, Li-Chen Wang(王利晨)†, Zheng-Rui Li(李峥睿), Di-An Wu(吴迪安), Ruo-Shui Liu(刘若水), and Shu-Li He(贺淑莉)‡   

  1. Department of Physics, Capital Normal University, Beijing 100048, China
  • Received:2020-07-15 Revised:2020-08-20 Accepted:2020-08-27 Online:2020-12-17 Published:2021-01-04
  • Contact: †These authors contributed equally to this work. ‡Corresponding author. E-mail: shulihe@cnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51771124, 51571146, and 51701130).

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Abstract: Tumor-targeted magnetic hyperthermia has recently attracted much attention. Magnetic nanoparticles (NPs) are heat mediator nanoprobes in magnetic hyperthermia for cancer treatment. In this paper, single cubic spinel structural Zn0.3Fe2.7O4 magnetic NPs with sizes of 14 nm-20 nm were synthesized, followed by coating with SiO2 shell. The SLP value of Zn0.3Fe2.7O4/SiO2 NPs below 20 nm changes non-monotonically with the concentration of solution under the alternating current (AC) magnetic field of 430 kHz and 27 kA/m. SLP values of all Zn0.3Fe2.7O4/SiO2 NPs appear a peak value with change of solution concentration. The solution concentrations with optimal SLP value decrease with increasing magnetic core size. This work can give guidance to the better prediction and control of the magnetic hyperthermia performance of materials in clinical applications.

Key words: magnetic nanoparticles, dipolar interaction, magnetic hyperthermia

中图分类号:  (Magnetic liquids)

  • 75.50.Mm
75.47.Lx (Magnetic oxides) 76.60.Es (Relaxation effects)