| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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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)‡ |
| Department of Physics, Capital Normal University, Beijing 100048, China |
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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.
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Received: 15 July 2020
Revised: 20 August 2020
Accepted manuscript online: 27 August 2020
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PACS:
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75.50.Mm
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(Magnetic liquids)
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75.47.Lx
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(Magnetic oxides)
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76.60.Es
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(Relaxation effects)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 51771124, 51571146, and 51701130). |
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Corresponding Authors:
†These authors contributed equally to this work. ‡Corresponding author. E-mail: shulihe@cnu.edu.cn
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Cite this article:
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) Effects of dipolar interactions on the magnetic hyperthermia of Zn0.3Fe2.7O 4 nanoparticles with different sizes 2021 Chin. Phys. B 30 017503
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