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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zhongmin Chen Smith, B.R. Bao-Min Ma Mei-Qing Huang Ya-Qiao Wu Kramer, M.J. |
| Copyright Year | 1965 |
| Abstract | The formation of metastable Pr/sub 2/Fe/sub 23/B/sub 3/ phase and its effect on magnetic properties of melt-spun Pr/sub 9/Fe/sub 91-x/B/sub x/ (x = 4-12) have been investigated. Thermogravimetric analysis (TGA) and X-ray diffraction (XRD) studies show that the samples consist of Pr/sub 2/Fe/sub 14/B and /spl alpha/-Fe phases at low B content, and Pr/sub 2/Fe/sub 14/B, /spl alpha/-Fe and Fe/sub 3/B at high B content. The metastable Pr/sub 2/Fe/sub 23/B/sub 3/ phase appears in the intermediate B content (8-12 at%). This metastable Pr/sub 2/Fe/sub 23/B/sub 3/ phase results in a poor squareness in the demagnetization curve and is detrimental to the hard magnetic properties. Transmission electron microscopy (TEM) studies reveal larger average grain sizes when the B content is at 8.5 at% or above. It is further found that this metastable phase can be transformed into Pr/sub 2/Fe/sub 14/B, /spl alpha/-Fe, and Fe/sub 3/B by annealing the sample at temperature of 750/spl deg/C or above, leading to a more square demagnetization curve. However, B/sub r/ of the nanocomposite decreases slightly due to the excessive grain growth during high-temperature annealing. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 2938 |
| Ending Page | 2940 |
| Page Count | 3 |
| File Size | 327943 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 39 |
| Issue Number | 5 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-09-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Metastasis Iron Magnetic properties Demagnetization Annealing Magnetic analysis X-ray diffraction X-ray scattering Transmission electron microscopy Grain size |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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