TY - JOUR
T1 - Effect of Mg doping on magnetic induction heating of Zn–Co ferrite nanoparticles
AU - Yang, Renpeng
AU - Yu, Xiaogang
AU - Li, Heng
AU - Wang, Chao
AU - Wu, Chengwei
AU - Zhang, Wei
AU - Guo, Weihong
N1 - Funding Information:
Funding: This work was supported by the National Key R&D Project of China ( 2018YFA0704103 , 2018YFA0704104 ), NSFC of Liaoning Province ( 2019-KF-02-01 ) and Fundamental Research Funds for the Central Universities ( DUT20YG129 ).
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/1/15
Y1 - 2021/1/15
N2 - Ferrite magnetic nanoparticles (MNPs) with spinel structure are of great significance in the study of magnetic induction hyperthermia (MIH). The effect of element doping on the magnetic properties of MNPs is crucial. Here, we report the influence of the Mg2+ substitution on Curie temperature (Tc), magnetic properties, and heating efficiency of MgxZn0.8-xCo0.2Fe2O4 (0.1 ≤ x ≤ 0.5) nanoparticles synthesized by hydrothermal method. With the increase of Mg2+ content, Tc increases from 36.7 °C to 242.9 °C due to the enhancement of the A-B super-exchange interaction. The specific saturation magnetization increases from 35.5 emu·g−1 to 53.3 emu·g−1 and then remains constant, which is caused by the effect of Yafet-Kittle angle and magnetic moment. The specific absorption rate (SAR) increases from 3.5 W·g−1to 82.7 W·g−1, which may be ascribed to the effect of size and specific saturation magnetization of the nanoparticles. When x = 0.3, the stable temperature under the alternating magnetic field (32 kA·m−1, 100 kHz) reaches 44.7 °C with the SAR of 49.0 W·g−1. The low toxicity to cells and high heating efficiency endow the MNPs the potential in MIH.
AB - Ferrite magnetic nanoparticles (MNPs) with spinel structure are of great significance in the study of magnetic induction hyperthermia (MIH). The effect of element doping on the magnetic properties of MNPs is crucial. Here, we report the influence of the Mg2+ substitution on Curie temperature (Tc), magnetic properties, and heating efficiency of MgxZn0.8-xCo0.2Fe2O4 (0.1 ≤ x ≤ 0.5) nanoparticles synthesized by hydrothermal method. With the increase of Mg2+ content, Tc increases from 36.7 °C to 242.9 °C due to the enhancement of the A-B super-exchange interaction. The specific saturation magnetization increases from 35.5 emu·g−1 to 53.3 emu·g−1 and then remains constant, which is caused by the effect of Yafet-Kittle angle and magnetic moment. The specific absorption rate (SAR) increases from 3.5 W·g−1to 82.7 W·g−1, which may be ascribed to the effect of size and specific saturation magnetization of the nanoparticles. When x = 0.3, the stable temperature under the alternating magnetic field (32 kA·m−1, 100 kHz) reaches 44.7 °C with the SAR of 49.0 W·g−1. The low toxicity to cells and high heating efficiency endow the MNPs the potential in MIH.
KW - Curie temperature
KW - Heating efficiency
KW - Magnetic induction hyperthermia
KW - Magnetic nanoparticles
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U2 - 10.1016/j.jallcom.2020.156907
DO - 10.1016/j.jallcom.2020.156907
M3 - Article
AN - SCOPUS:85090216955
SN - 0925-8388
VL - 851
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 156907
ER -