TY - JOUR
T1 - Structural Heterogeneity of the Melt-spun (Fe, Co)-Si-B-P-Cu Alloy with Excellent Soft Magnetic Properties
AU - Sato, Kazuhisa
AU - Takenaka, Kana
AU - Makino, Akihiro
AU - Hirotsu, Yoshihiko
N1 - Funding Information:
This work was supported by the “Tohoku Innovative Materials Technology Initiatives for Reconstruction (TIMT)” funded by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) and Reconstruction Agency, Japan. KS wishes to thank Prof. N. Nishiyama, Dr. P. Sharma and Dr. A. Hirata of Tohoku University for invaluable comments.
Publisher Copyright:
© The Authors. Published by Elsevier B.V.
PY - 2015
Y1 - 2015
N2 - A structural heterogeneity of a newly developed soft magnetic Fe81.2Co4Si0.5B9.5P4Cu0.8 melt-spun alloy has been studied by transmission electron microscopy (TEM) and electron diffraction. Hollow-cone dark-field TEM imaging revealed that the density of coherent scattering regions in the as-quenched Fe81.2Co4Si0.5B9.5P4Cu0.8 alloy is as high as that in the Fe85.2Si2B8P4Cu0.8 hetero-amorphous alloy (NANOMET®). According to the aberration-corrected high-resolution TEM, crystalline atomic clusters, typically of ∼1 nm in diameter, are densely distributed in an amorphous matrix of Fe81.2Co4Si0.5B9.5P4Cu0.8 alloy, while nanobeam electron diffraction detected weak Bragg reflections from Fe clusters with the body centered cubic structure. These results unambiguously reveal structural heterogeneity of the as-quenched Fe81.2Co4Si0.5B9.5P4Cu0.8 alloy, which is similar to that observed in the NANOMET®.
AB - A structural heterogeneity of a newly developed soft magnetic Fe81.2Co4Si0.5B9.5P4Cu0.8 melt-spun alloy has been studied by transmission electron microscopy (TEM) and electron diffraction. Hollow-cone dark-field TEM imaging revealed that the density of coherent scattering regions in the as-quenched Fe81.2Co4Si0.5B9.5P4Cu0.8 alloy is as high as that in the Fe85.2Si2B8P4Cu0.8 hetero-amorphous alloy (NANOMET®). According to the aberration-corrected high-resolution TEM, crystalline atomic clusters, typically of ∼1 nm in diameter, are densely distributed in an amorphous matrix of Fe81.2Co4Si0.5B9.5P4Cu0.8 alloy, while nanobeam electron diffraction detected weak Bragg reflections from Fe clusters with the body centered cubic structure. These results unambiguously reveal structural heterogeneity of the as-quenched Fe81.2Co4Si0.5B9.5P4Cu0.8 alloy, which is similar to that observed in the NANOMET®.
KW - Fe cluster
KW - Hetero-amorphous
KW - NANOMET
KW - Soft magnetic material
KW - Structural heterogeneity
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U2 - 10.1016/j.phpro.2015.12.154
DO - 10.1016/j.phpro.2015.12.154
M3 - Conference article
AN - SCOPUS:84974666979
SN - 1875-3884
VL - 75
SP - 1376
EP - 1380
JO - Physics Procedia
JF - Physics Procedia
T2 - 20th International Conference on Magnetism, ICM 2015
Y2 - 5 July 2015 through 10 July 2015
ER -