DocumentCode :
78330
Title :
X-Ray Absorption Studies of 
Alloy
Author :
Nishijima, Masahiko ; Matsuura, Makoto ; Yan Zhang ; Takenaka, Kana ; Makino, Akihiro
Author_Institution :
Inst. for Mater. Res., Tohoku Univ., Sendai, Japan
Volume :
50
Issue :
4
fYear :
2014
fDate :
Apr-14
Firstpage :
1
Lastpage :
4
Abstract :
The local structure around Cu in Fe85Si2B8P4Cu1 (NANOMET) and Fe85Si2B12Cu1 alloys was investigated by X-ray absorption fine structure (XAFS) and analytical transmission electron microscopy (TEM). The XAFS measurements indicate that the local structure around Cu atoms for the nanocrystallized Fe85Si2B8P4Cu1 alloy is a bcc-like structure, suggesting that Cu atoms occupy substitutional site of bcc-Fe or Cu atoms form bcc-type clusters in bcc-Fe nanocrystallites. The compositional TEM analysis indicates that Cu atoms distribute in both nanocrystallites and amorphous matrix. These facts suggest that Cu atoms in the Fe85Si2B8P4Cu1 alloy do not form stable fcc-Cu clusters, which act as the nucleation sites in the case of Fe73.5Si13.5B9Nb3Cu1 (FINEMET) alloy.
Keywords :
X-ray absorption spectra; amorphous state; boron alloys; copper alloys; crystallites; iron alloys; nanostructured materials; nucleation; phosphorus alloys; silicon alloys; transmission electron microscopy; Fe85Si2B12Cu; Fe85Si2B8P4Cu; TEM; X-ray absorption fine structure; XAFS; amorphous matrix; analytical transmission electron microscopy; bcc-like structure; fcc-Cu cluster; finemet alloy; nanocrystallized alloy; nanomet alloy; nucleation sites; Absorption; Annealing; Atomic measurements; Iron; Nanocrystals; Soft magnetic materials; NANOMET; Nanocrystalline soft magnetic material; X-ray absorption fine structure; transmission electron microscopy (TEM) characterization;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2013.2286425
Filename :
6798026
Link To Document :
