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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Tang, W. Dennis, K.W. Wu, Y.Q. Kramer, M.J. Anderson, I.E. McCallum, R.W. |
| Copyright Year | 1965 |
| Abstract | The effect of Nd substitution on microstructure and magnetic properties in [Nd/sub x/(YDy)/sub 0.5(1-x)/]/sub 2.2/Fe/sub 14/B ribbons melt-spun at 22 m/s has been systematically studied. As-spun ribbons with low Nd content consist of 2 : 17 and 2 : 14 : 1 phases in an amorphous matrix, while as-spun ribbons with high Nd contain 2 : 14 : 1 and Fe phases in the amorphous matrix. After annealing at 700/spl deg/C for 15 min, all of the ribbons exhibit only a single 2 : 14 : 1 phase in their X-ray diffraction patterns. Nd substitution can improve the maximum energy product of annealed ribbons but deteriorate the temperature stability of the ribbons. Increasing Nd (x) from 0 to 0.8, decreases coercivity from 22 to 13.5 kOe, but increases the maximum energy product from 5.87 to 11.2 MGOe. The temperature coefficients for remanence and coercivity increase from -0.045/spl deg/C to -0.106 %//spl deg/C, and -0.306 to -0.38 %//spl deg/C, respectively for the same substitution range. Transmission electron microscope microstructures show that the samples with less Nd content exhibit a more uniform distribution of grains. Their average grain size is about 40 nm. The studied results show that the YDy-based R/sub 2/Fe/sub 14/B magnets are very promising for high-temperature performance. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 2907 |
| Ending Page | 2909 |
| Page Count | 3 |
| File Size | 198350 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 40 |
| Issue Number | 4 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-07-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Neodymium Iron Microstructure Amorphous materials Matrices Annealing Coercive force Magnetic properties X-ray diffraction Temperature |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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