Structural and magnetic properties of high-energy ball-milled nanoparticles CoFe₂O₄ via neutron diffraction study
Vol. 135 No. 1B (2026), Original Article
Vol. 135 No. 1B (2026)

Structural and magnetic properties of high-energy ball-milled nanoparticles CoFe₂O₄ via neutron diffraction study

Original Article
https://doi.org/10.26459/hueunijns.v135i1B.8430
Published 2026-06-29
Thanh Nghiem Nguyen
Institute of Oceanography, Vietnam Academy of Science and Technology, Nha Trang, Vietnam
Thanh Khan Dinh
The University of Danang - University of Science and Education, Danang, Vietnam
Vu Truong Son Le
The University of Danang - University of Science and Education, Danang, Vietnam
Ngoc Dat Trinh
The University of Danang - University of Science and Education, Danang, Vietnam
Ngoc Toan Dang
Institute of Research and Development, Duy Tan University, Danang, Vietnam
Phan Thao Tien Doan
Institute of Oceanography, Vietnam Academy of Science and Technology, Nha Trang, Vietnam
Rutkauskas Anton
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Russia
Kichanov Sergey
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Russia
Nguyen Truong Tho*
Faculty of Electronics, Electrical Engineering and Material Technology, University of Sciences, Hue University, Hue, Vietnam
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Keywords

Spinel ferrite
Neutron diffraction
Milling
Antiferromagnetism
Nanoparticles

How to Cite

1.
Nguyen TN, Dinh TK, Le VTS, Trinh ND, Dang NT, Doan PTT, Anton R, Sergey K, Nguyen TT. Structural and magnetic properties of high-energy ball-milled nanoparticles CoFe₂O₄ via neutron diffraction study. hueuni-jns [Internet]. 2026Jun.29 [cited 2026Oct.1];135(1B):139-45. Available from: http://222.255.146.83/index.php/hujos-ns/article/view/8430
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Abstract

In this study, we investigated the structural and magnetic properties of high-energy ball-milled CoFe2O4 nanoparticles using neutron powder diffraction. Rietveld refinement confirmed the structural stability of the single-phase cubic spinel (Fd-3m) during milling up to 120 min. However, the lattice parameters, including the lattice constant, bond lengths, and bond angles change with milling time. In particular, milling leads to a widening of the B–O–B bond angles and a narrowing of the A–O–B bond angles, which enhances the antiferromagnetic superexchange interaction JAB. The refinement also reveals significant changes in the magnetic moments at the tetrahedral and octahedral sites. The variation in the average magnetic moments closely follows the evolution of the inversion degree, indicating that the reduction in magnetic moments is associated with the decrease in inversion degree during the milling process. These findings contribute to a deeper understanding of structure–property relationships in nanosized CoFe2O4 and provide meaningful guidance for tuning its magnetic performance through mechanical processing.

https://doi.org/10.26459/hueunijns.v135i1B.8430
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