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Article

Reverse Magnetization Behavior Investigation of Mn-Al-C-(α-Fe) Nanocomposite Alloys with Different α-Fe Content Using First-Order Reversal Curves Analysis

1
Advanced Magnetic Materials Research Center, School of Metallurgy and Materials, College of Engineering, University of Tehran, Tehran 111554563, Iran
2
Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
*
Authors to whom correspondence should be addressed.
Academic Editors: Ovidiu Crisan, Alina Daniela Crişan and Chris Binns
Nanomaterials 2022, 12(19), 3303; https://doi.org/10.3390/nano12193303
Received: 20 August 2022 / Revised: 8 September 2022 / Accepted: 19 September 2022 / Published: 22 September 2022
(This article belongs to the Special Issue Novel RE-free Nanocomposite Magnets)
The reverse magnetization behavior for bulk composite alloys containing Mn-Al-C and α-Fe nanoparticles (NPs) has been investigated by hysteresis loops, recoil, and first-order reversal curves (FORC) analysis. The effect of adding different percentages of α-Fe (5, 10, 15, and 20 wt. %) on the magnetic properties and demagnetization behavior of Mn-Al-C nanostructured bulk magnets was investigated. The fabricated nanocomposites were characterized by XRD and VSM for structural analysis and magnetic behavior investigations, respectively. The demagnetization curve of the sample Mn-Al-C-5wt. % α-Fe showed a single hard magnetic behavior and showed the highest increase in remanence magnetization compared to the sample without α-Fe, and therefore this combination was selected as the optimal composition for FORC analysis. Magnetic properties for Mn-Al-C-5 wt. % α-Fe nanocomposite were obtained as Ms = 75 emu/g, Mr = 46 emu/g, Hc = 3.3 kOe, and (BH)max = 1.6 MGOe, indicating a much higher (BH)max than the sample with no α-Fe. FORC analysis was performed to identify exchange coupling for the Mn-Al-C-0.05α-Fe nanocomposite sample. The results of this analysis showed the presence of two soft and hard ferromagnetic components. Further, it showed that the reverse magnetization process in the composite sample containing 5 wt. % α-Fe is the domain rotation model. View Full-Text
Keywords: reverse magnetization; recoil curve; FORC analysis; Henkel plot; MnAlC reverse magnetization; recoil curve; FORC analysis; Henkel plot; MnAlC
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MDPI and ACS Style

Attyabi, S.N.; Seyyed Ebrahimi, S.A.; Lalegani, Z.; Hamawandi, B. Reverse Magnetization Behavior Investigation of Mn-Al-C-(α-Fe) Nanocomposite Alloys with Different α-Fe Content Using First-Order Reversal Curves Analysis. Nanomaterials 2022, 12, 3303. https://doi.org/10.3390/nano12193303

AMA Style

Attyabi SN, Seyyed Ebrahimi SA, Lalegani Z, Hamawandi B. Reverse Magnetization Behavior Investigation of Mn-Al-C-(α-Fe) Nanocomposite Alloys with Different α-Fe Content Using First-Order Reversal Curves Analysis. Nanomaterials. 2022; 12(19):3303. https://doi.org/10.3390/nano12193303

Chicago/Turabian Style

Attyabi, Seyed Nourallah, Seyyed Ali Seyyed Ebrahimi, Zahra Lalegani, and Bejan Hamawandi. 2022. "Reverse Magnetization Behavior Investigation of Mn-Al-C-(α-Fe) Nanocomposite Alloys with Different α-Fe Content Using First-Order Reversal Curves Analysis" Nanomaterials 12, no. 19: 3303. https://doi.org/10.3390/nano12193303

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