Effect of Annealing Time on Structural and Magnetic Properties of Fe68Pd32 Nanoparticles Synthesized by Sonoelectrodeposition

Nguyen Hoang Nam, Nguyen Tien Hoi, Truong Thanh Trung, Tran Thi Hong, Luu Manh Quynh, Nguyen Hoang Luong

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Published Jun 23, 2022
DOI: https://doi.org/10.25073/2588-1124/vnumap.4731

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NAM, Nguyen Hoang et al. Effect of Annealing Time on Structural and Magnetic Properties of Fe68Pd32 Nanoparticles Synthesized by Sonoelectrodeposition. VNU Journal of Science: Mathematics - Physics, [S.l.], v. 38, n. 2, june 2022. ISSN 2588-1124. Available at: <https://js.vnu.edu.vn/MaP/article/view/4731>. Date accessed: 25 apr. 2024. doi: https://doi.org/10.25073/2588-1124/vnumap.4731.
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Vol 38 No 2
Section
Original Articles

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Abstract

Fe68Pd32 nanoparticles were prepared by sonoelectrodeposition with subsequent annealing at 600 oC for a series of times from 1 h to 6 h. The annealing transformed disordered face-centered cubic (fcc) phase in the as-prepared samples into a multi-phase material containing an ordered L10 FePd, fcc FePd and body-centered cubic (bcc) Fe phases. After annealing at 600°C for 6 h the hard magnetic phase L10-FePd and soft magnetic fcc-FePd phase coexist. The structural and magnetic properties of the samples were studied in dependence of annealing time. The decrease of coercivity with increasing annealing time from 1 h to 4 h is suggested to occur by formation of multi-L10 domain particles, while the increase of coercivity with increasing annealing time from 4 h to 6 h is proposed due to the multiphase nature of the nanoparticles samples.

Keywords: FePd, sonoelectrodeposition, magnetic nanoparticles, coercivity.

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