Mn\(_{55-x}\)Co\(_x\)Bi\(_{45}\) Melt Spun Ribbons: Microstructures and Magnetic Properties

Truong Xuan Nguyen, Anh Kha Vuong, Ngan Thuy Thi Dang, Nam Hoai Nguyen, Nam Hong Pham, Nguyen Van Quynh, Dinh Van Tuan, Vuong Van Nguyen
Author affiliations

Authors

  • Truong Xuan Nguyen Institute of Materials Science, Vietnam Academy of Science and Technology, No.18, Hoang Quoc Viet Road, Cau Giay district, Hanoi, Vietnam
  • Anh Kha Vuong Faculty of pedagogy, Ha Noi Metropolitan University, No. 98, Duong Quang Ham road, Cau Giay District, Hanoi, Vietnam
  • Ngan Thuy Thi Dang Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
  • Nam Hoai Nguyen Institute of Materials Science, Vietnam Academy of Science and Technology, No.18, Hoang Quoc Viet Road, Cau Giay district, Hanoi, Vietnam
  • Nam Hong Pham Institute of Materials Science, Vietnam Academy of Science and Technology, No.18, Hoang Quoc Viet Road, Cau Giay district, Hanoi, Vietnam
  • Nguyen Van Quynh University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, No. 18, Hoang Quoc Viet road, Cau Giay District, Hanoi, Vietnam
  • Dinh Van Tuan Electric Power University, No. 235, Hoang Quoc Viet road, Cau Giay District, Hanoi, Vietnam
  • Vuong Van Nguyen Institute of Materials Science, Vietnam Academy of Science and Technology, No.18, Hoang Quoc Viet Road, Cau Giay district, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/0868-3166/16597

Keywords:

Melt – spun ribbons, Microstructures, DSC traces, Saturation magnetization, Magnetic properties.

Abstract

In this paper, we present the effect of Cobalt (Co) addition on the crystallization, microstructures and magnetic properties of Mn55-xCoxBi45 (x = 0, 5, 10, 20) melt – spun ribbons. The ribbons were prepared by the melt-spinning techique and subsequent anneal at 280 oC for 5 h. The investigations by using X-ray diffraction (XRD), Differential Scanning Calorimetry (DSC) traces as well the Vibration Sample Magnetometer  (VSM) measurements result in the optimal content of Co added to the MnBi system is arounf 5 %at. The larger Co content causes the eutectic Mn-Co formation which restricts the reaction between Mn and Bi to form MnBi ferromagnetic phase responsible for ribbons’ performance the saturation magnetization Ms. The maximum saturation magnetization Ms of 65emu/g and the coercivity iHc of 4.7 kOe was achived for the ribbon of Mn50Co5Bi45. The effect of Co content on the microstructures and magnetic properties of  Mn55-xCoxBi45 melt – spun ribbons will be discussed in detail.

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Published

27-03-2022

How to Cite

[1]
T. X. Nguyen, “Mn\(_{55-x}\)Co\(_x\)Bi\(_{45}\) Melt Spun Ribbons: Microstructures and Magnetic Properties”, Comm. Phys., vol. 32, no. 3, p. 285, Mar. 2022.

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Vol. 32 No. 3 (2022)

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Papers

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Received 04-10-2021
Accepted 25-01-2022
Published 27-03-2022