The heating efficiency of magnetic nanoparticles under an alternating magnetic field

被引：10
|
作者：
Yu, Xiaogang [1 ,2 ]
Yang, Renpeng [1 ]
Wu, Chengwei [1 ]
Liu, Bo [2 ]
Zhang, Wei [1 ]
机构：
[1] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dept Engn Mech, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, Sch Biomed Engn, Dalian 116024, Peoples R China
来源：
SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期
基金：
中国国家自然科学基金;
关键词：
CATION DISTRIBUTION; FERRITE; HYPERTHERMIA; CRYSTALLINITY; ABSORPTION; DEPENDENCE; PARTICLES; SURFACE;
D O I：
10.1038/s41598-022-20558-0
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Hysteresis loss and relaxation loss are the two dominant heating mechanisms of magnetic nanoparticles (MNPs) in an alternating magnetic field (AMF). In magnetic induction hyperthermia, heating efficiency is one of the crucial factors. It is proposed that the MNPs with a dominant heating mechanism of relaxation loss will exhibit a higher heating efficiency. However, the relative experiments supporting the proposal is still absent due to the difficulty of obtaining the MNPs with the same components and similar morphology but different dominant heating mechanism. Here, the post-processing method of calcination is employed to change the cation distribution of the MNPs (Fe3O4 and Zn0.54Co0.46Cr0.6Fe1.4O4), so as to obtain the MNPs with similar morphology but different dominant heating mechanism. The magnetic heating experiments were conducted to examine the heating efficiency. The results suggest that the MNPs with relaxation loss have a higher heating efficiency under the investigated AMF.
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页数：8
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