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Enhanced hyperthermia performance in hard-soft magnetic mixed Zn0.5CoxFe2.5-xO4/SiO2 composite magnetic nanoparticles |
| Xiang Yu(俞翔)†, Li-Chen Wang(王利晨)†, Zheng-Rui Li(李峥睿)†, Yan Mi(米岩), Di-An Wu(吴迪安), and Shu-Li He(贺淑莉)‡ |
| 1 Department of Physics, Capital Normal University, Beijing 100048, China |
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Abstract High quality Zn0.5CoxFe2.5-xO4 (x = 0, 0.05, 0.1, 0.15) serial magnetic nanoparticles with single cubic structures were prepared by the modified thermal decomposition method, and Zn0.5CoxFe2.5-xO4/SiO2 composite magnetic nanoparticles were prepared by surface modification of SiO2. The magnetic anisotropy of the sample increases with the increase of the doping amount of Co2+. When the doping amount is 0.1, the sample shows the transition from superparamagnetism to ferrimagnetism at room temperature. In the Zn0.5CoxFe2.5-xO4/SiO2 serial samples, the maximum value of specific loss power (SLP) with 1974 W/g metal can also be found at doping amount of x = 0.1. The composite nanoparticles are expected to be an excellent candidate for clinical magnetic hyperthermia.
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Received: 25 June 2020
Revised: 29 September 2020
Accepted manuscript online: 31 October 2020
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PACS:
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62.23.St
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(Complex nanostructures, including patterned or assembled structures)
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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, Li-Chen Wang(王利晨, Zheng-Rui Li(李峥睿, Yan Mi(米岩), Di-An Wu(吴迪安), and Shu-Li He(贺淑莉) Enhanced hyperthermia performance in hard-soft magnetic mixed Zn0.5CoxFe2.5-xO4/SiO2 composite magnetic nanoparticles 2021 Chin. Phys. B 30 036201
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