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Content Provider | IEEE Xplore Digital Library |
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Author | Choong Jin Yang Eon Byung Park Yong Soon Hwang Eng Chan Kim |
Copyright Year | 1965 |
Abstract | The addition of Co was found to enhance the magnetic properties of Fe/sub 3/B/Nd/sub 2/Fe/sub 14/B nanocomposite magnets by forming Nd/sub 4/Fe/sub 77.5-x/Co/sub x/(HfGa)/sub y/B/sub 18.5/(0/spl les/x/spl les/5, 0/spl les/y/spl les/0.5). The enhancements resulted from the fact that the Co addition retarded the crystallization of a-Fe and Fe/sub 3/B accelerated that of Nd/sub 2/Fe/sub 14/B. The decreased interval between the crystallization temperature of Fe/sub 3/B and Nd/sub 2/Fe/sub 14/B enabled the grain growth of each phase to be uniform during post annealing of the melt spun ribbons. The addition of Co from 3 to 5 wt.% increased the coercivity (/sub i/H/sub c/) from 3.27 3.54 kOe with the enhanced remanence (4 /spl pi/ M/sub r/) around 11.54 kG. By the optimized processing for the nanocomposite magnets of Nd/sub 4/Fe/sub 71.5/Co/sub 5/Hf/sub 0.5/Ga/sub 0.5/B/sub 18.5/ ribbons spun at 26 m/sec and magnetization annealing at 680/spl deg/C for 10 min, the magnetic properties of Br/sub 1/=11.54 kG, /sub i/H/sub c/=3.54 kOe and (BH)/sub max/=14.35 MGOe were obtained from volume production line. |
Sponsorship | IEEE Magnetics Society |
Starting Page | 3328 |
Ending Page | 3330 |
Page Count | 3 |
File Size | 285740 |
File Format | |
ISSN | 00189464 |
Volume Number | 35 |
Issue Number | 5 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 1999-09-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Magnetic properties Iron Neodymium Magnets Crystallization Annealing Acceleration Temperature Coercive force Remanence |
Content Type | Text |
Resource Type | Article |
Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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