Study on the mechanism of tunable ferromagnetic composites with different rare earth ions

Zeng, Minli, Thummavichai, Kunyapat, Chen, Wenting, Liu, Guangsheng, Li, Zhen, Chen, Xiaorong, Feng, Chen, Li, Yi, Wang, Nannan and Zhu, Yanqiu (2021) Study on the mechanism of tunable ferromagnetic composites with different rare earth ions. RSC Advances, 11 (59). pp. 37246-37253. ISSN 2046-2069

d1ra07249h.pdf - Published Version
Available under License Creative Commons Attribution 4.0.

Download (820kB) | Preview
Official URL:


Size-controlled Fe3O4 nanoparticles doped with rare earth (RE) ions (La3+, Ce3+, and Dy3+) varying from 15 nm to 30 nm were successful synthesized by a hydrothermal method for potential applications in the fields of biomedicine, environmental protection and magnetic memory devices. They possessed good dispersibility, adjustable particle size and nearly spherical shape. The particle grain size was uniformly distributed and showed a low degree of agglomeration in comparison with undoped Fe3O4 nanoparticles. The FTIR results showed that the RE elements partially replaced Fe2+, occupied the octahedral position, and enhanced the vibration of the Fe–O bond. The XPS study further revealed that the valence states of La, Ce, and Dy are both positive trivalent. The XPS Fe 2p valence band spectra observed a shift in the peak position toward higher binding energy after RE doping, confirming the existence of RE ions in the octahedral position. This paper explains the mechanism of rare earth doping with Fe3O4, and clarifies the influence of the doping of different RE ions on its magnetic properties. The detailed analysis of RE-doped ferrite materials can open a new perspective in designing biomedical and spintronics materials with tailored properties by choosing suitable cation substitution.

Item Type: Article
Additional Information: Funding information: This work was supported by grants from the National Natural Science Foundation (grant no: 51972068) and Key Laboratory of New Processing Technology for Nonferrous Metals and Materials.
Subjects: F200 Materials Science
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: John Coen
Date Deposited: 07 Dec 2021 14:12
Last Modified: 07 Dec 2021 14:15

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics