IEEE TRANSACTIONS ON MAGNETICS 51(11) 2006504-1-2006504-4 2015年11月 [査読有り]
The magnetic influence of silicon, boron, phosphorous, niobium, as well as Cu in Fe-rich amorphous was studied through ab initio molecular dynamics simulations. The small concentration of metalloids with large electronegativity is beneficial to th...
Chemically ordered hard magnetic L1(0)-FeNi phase of higher grade than cosmic meteorites is produced artificially. Present alloy design shortens the formation time from hundreds of millions of years for natural meteorites to less than 300 hours. E...
JOURNAL OF APPLIED PHYSICS 117(17) 17A324-1-17A324-4 2015年5月 [査読有り]
It is known that Cu plays an essential role in reducing the grain size of precipitated bcc Fe(Si) nanocrystallites in a nanocrystalline soft-magnetic Fe85.2Si1B9P4Cu0.8 (NANOMET (R)) alloys like as an Fe73.5Si13.5B9Nb3Cu1 (FINEMET (R)). However, s...
JOURNAL OF APPLIED PHYSICS 117(17) 17B705-1-17B705-4 2015年5月 [査読有り]
In the work reported in this paper, ab initio molecular dynamics simulation was performed on Fe85Si2B9P4 amorphous alloy. Preferred atomic environment of the elements was analyzed with Voronoi polyhedrons. It showed that B and P atoms prefer less ...
A. Takeuchi   Y. Zhang   K. Takenaka   A. Makino   
JOURNAL OF APPLIED PHYSICS 117(17) 17B737-1-17B737-4 2015年5月 [査読有り]
Fe-based Fe85B15, Fe84B15Cu1, Fe82Si2B15Cu1, Fe85Si2B12Cu1, and Fe85Si2B8P4Cu1 (NANOMET (R)) alloys were experimental and computational analyzed to clarify the features of NANOMET that exhibits high saturation magnetic flux density (B-s) nearly 1....
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 63(4) 209-216 2016年4月
This paper provides general overviews for the recent progress in alloy designs for high-entropy crystalline and glassy alloys in the following aspects. First, the alloy designs for bulk metallic glasses (BMGs) are briefly reviewed by focusing on a...