Influence of magnetic field heat treatment on the microstructures and coercivity in ferromagnetic amorphous alloys

Zhao, Chengliang; Bruna, Pere; Wang, Anding; Wang, Hao; He, Aina; Xie, Chenyang; Xie, Chuang; Sun, Zhenzhong; Chang, Chuntao; Crespo, Daniel; Inoue, A.

doi:10.1016/j.jmrt.2022.11.060

Cited by 8 publications

(1 citation statement)

References 23 publications

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“…Fujii et al reported a significantly enhanced (by 100% -200%) nucleation rate of Fe(Si) primary crystallites under a 6 T static magnetic field for classic Fe78Si9B13 and Finemet-type Fe73.5Si13.5B9Nb3Cu1 amorphous alloys (Hiromichi Fujii et al, 2008). This observation has been repeated by other authors using similar alloys (Onodera et al, 2015) (Zhao et al, 2022). The fundamental mechanism of enhanced nucleation in these studies is explained based on classic thermodynamics and kinetics theory for nucleation-growth-type transformations (see Section 2.1.1 for details), as articulated here.…”

Section: Magnetic Field Annealingmentioning

confidence: 72%

Controlling microstructure and magnetic responses in FeSiB system under magnetic or mechanical inputs

Zhang

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Last but not least, I want to send huge thanks to my family for their unconditional love and constant encouragement. Thank you to my parents for always inspiring me and giving me the best opportunities since my childhood. Thank you to my parents-in-law, who have always been incredibly supportive of my career and decision. Special thanks to my mother and mother-in-law, who have spent time with us at our place, babysitting our daughter and making us delicious food. Finally, I would like to wholeheartedly thank my wife, Rachel, and our adorable daughter, Nina, for all the love and emotional support they have given me. Rachel has always believed in me since day one and supported me in all my endeavors; Nina always brings joy to my day with her sweet smiles. I'm so grateful to have both of you in my life.

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Section: Magnetic Field Annealingmentioning

confidence: 72%

Controlling microstructure and magnetic responses in FeSiB system under magnetic or mechanical inputs

Zhang

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Exploring Microstructure and Magnetic Domain Evolution in the As-cast Soft Magnetic Fe74B20Nb2Hf2Si2 Alloy: A Comprehensive Study Using STEM, Lorentz TEM, and LM-STEM DPC Microscopy

Czaja,

Rezaei-Shahreza,

Hasani

et al. 2024

Metall Mater Trans A

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This study delves into subtle changes in the microstructure and domain arrangement of a Fe74B20Nb2Hf2Si2 soft magnetic amorphous alloy. Utilizing transmission electron microscopy in Lorentz mode, low-magnification STEM, and differential phase contrast analysis (DPC), the research explores both the as-cast state and annealed samples. The results confirmed the formation of α-Fe, Fe23B6, Fe2(Hf, Nb), and Fe2B crystalline phases with increasing annealing temperature. Consequently, these crystallization stages induce significant alterations in magnetic domain size and spatial distribution due to microstructural changes. As the crystallization temperature rises, the volume fraction of crystalline phases increases, leading to modifications in the arrangement and size of magnetic domains. The decrease in magnetic domain size, associated with the formation of pinning sites during heat treatment, leads to alterations in soft magnetic properties. This includes an increase in coercivity (Hc) up to 40 A/m in the sample annealed at the temperature range of the third crystallization stage compared to the as-cast sample (1.5 A/m). Furthermore, as the annealing temperature rises, there is a corresponding increase in saturation magnetization (Ms), which reached to 1.71 T in the sample annealed within the temperature range of the third crystallization stage. These findings hold substantial implications for the practical applications of the Fe-based soft bulk metallic glasses (BMGs) alloy across various industries.

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Improving the Mechanical and Magnetic Properties of Equiatomic FeCo-2V Alloy Through Mild Magnetic Field Annealing

Li,

Chen,

et al. 2024

Metall Mater Trans A

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Influence of magnetic field heat treatment on the microstructures and coercivity in ferromagnetic amorphous alloys

Cited by 8 publications

References 23 publications

Controlling microstructure and magnetic responses in FeSiB system under magnetic or mechanical inputs

Controlling microstructure and magnetic responses in FeSiB system under magnetic or mechanical inputs

Exploring Microstructure and Magnetic Domain Evolution in the As-cast Soft Magnetic Fe74B20Nb2Hf2Si2 Alloy: A Comprehensive Study Using STEM, Lorentz TEM, and LM-STEM DPC Microscopy

Improving the Mechanical and Magnetic Properties of Equiatomic FeCo-2V Alloy Through Mild Magnetic Field Annealing

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