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Structure and soft magnetic properties of nanocrystalline Fe73.5Nb2Ta1Si13.5B9Cu1 alloy ribbons

N. N. Dinh, N. Q. Hoa, N. D. Thien, N. V. Dung, T. V. Thang, T. T. Ngoc Anh, D. T. Kim Anh, N. T. Nghia, B. T. Son, V. V. Hiep
Author affiliations

Authors

  • N. N. Dinh Faculty of Physics, VNU University of Science, 334 Nguyen Trai,Thanh Xuan, Hanoi, Vietnam
  • N. Q. Hoa Faculty of Physics, VNU University of Science, 334 Nguyen Trai,Thanh Xuan, Hanoi, Vietnam https://orcid.org/0009-0003-6323-3741
  • N. D. Thien Faculty of Physics, VNU University of Science, 334 Nguyen Trai,Thanh Xuan, Hanoi, Vietnam
  • N. V. Dung Faculty of Engineering Physics, Hanoi University of Science and Technology, 1 Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam https://orcid.org/0009-0002-9359-2537
  • T. V. Thang Faculty of Physics, VNU University of Science, 334 Nguyen Trai,Thanh Xuan, Hanoi, Vietnam https://orcid.org/0009-0002-2582-2484
  • T. T. Ngoc Anh Faculty of Physics, VNU University of Science, 334 Nguyen Trai,Thanh Xuan, Hanoi, Vietnam
  • D. T. Kim Anh Faculty of Physics, VNU University of Science, 334 Nguyen Trai,Thanh Xuan, Hanoi, Vietnam
  • N. T. Nghia Faculty of Physics, VNU University of Science, 334 Nguyen Trai,Thanh Xuan, Hanoi, Vietnam
  • B. T. Son Institute of Physics, Vietnam Academy of Science and Technology 10 Dao Tan, Hanoi, Vietnam
  • V. V. Hiep Faculty of Physics, VNU University of Science, 334 Nguyen Trai,Thanh Xuan, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/0868-3166/22683

Abstract

The crystal structure and soft magnetic properties of thermomagnetic annealed  \(\text{Fe}_{73.5}\text{Nb}_{2}\text{Ta}_{1}\text{Si}_{13.5}\text{B}_{9}\text{Cu}_{1}\) alloy ribbons prepared by rapid cooling were investigated. X-ray diffraction results showed that the as-cast alloy strips had a completely amorphous structure, while the annealed samples formed \(\alpha\)-Fe (Si) nanocrystals with sizes ranging from 8 to 11 nm. Differential scanning calorimetry analysis of the as-cast samples indicated an exothermic crystallization peak at 515\(^{\circ}\)C of the first crystallization stage corresponding to the formation of the \(\alpha\)-Fe (Si) crystalline phase. The as-cast ribbon samples were annealed at 500\(^{\circ}\)C for 30, 40, and 50 minutes and in a saturation magnetic field of 10 Oe. The crystallinity of the alloy ribbons thermomagnetically annealed at 500\(^{\circ}\)C for 30 min was determined by DSC analysis to be 42%. The optimum annealing time at 500\(^{\circ}\)C in a saturated magnetic field for the amorphous alloy ribbons to achieve the best magnetic properties was 40 minutes. Under that condition, the \(\alpha\)- Fe (Si) phase crystallized completely, and the material exhibited excellent soft magnetic properties, with a saturation induction of \(\text{B}_{s} = 1.45\) T, coercivity \(\text{H}_{c} = 0.015\) Oe, and maximum permeability \(\mu_{\text{max}} = 551,500\).

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Published

19-09-2025

How to Cite

[1]
D. Nguyen Ngoc, “Structure and soft magnetic properties of nanocrystalline Fe<sub>73.5</sub>Nb<sub>2</sub>Ta<sub>1</sub>Si<sub>13.5</sub>B<sub>9</sub>Cu<sub>1</sub> alloy ribbons”, Comm. Phys., vol. 35, no. 3, p. 215, Sep. 2025.

Issue

Vol. 35 No. 3 (2025)

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Papers

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