| Study of gamma-ray irradiation effect on permanent magnets | |
| Gao, R. S. ; Zhen, L. ; Shao, W. Z. ; Hao, X. P. ; Sun, X. Y. ; Yang, L. ; Wang, B. Y. | |
| 2010-05-10 ; 2010-05-10 | |
| 会议名称 | JOURNAL OF APPLIED PHYSICS ; 52nd Annual Conference on Magnetism and Magnetic Materials ; Tampa, FL ; Web of Science |
| 关键词 | ND-FE-B NEUTRON-IRRADIATION RADIATION-DAMAGE FLUX LOSS NDFEB BEAM Physics, Applied |
| 中文摘要 | Irradiation damage of FeCrCo, AlNiCo, SmCo, and NdFeB permanent magnets was investigated by using gamma-ray irradiation. Results of magnetic property measurement show that FeCrCo and NdFeB have more demagnetization than AlNiCo and SmCo. X-ray diffraction analysis shows that gamma-ray irradiation leads to the increase of FeCrCo crystal mismatch and decrease of AlNiCo ordering degree. The investigations by positron annihilation spectroscopy technique show that the defects in AlNiCo and SmCo increase after gamma-ray irradiation. The defects induced by gamma-ray irradiation in NdFeB magnets are not the main source that leads to partial demagnetization. The irradiation resistances of these magnets are discussed in detail considering the thermal stability, coercivity mechanisms, and defect damage. (C) 2008 American Institute of Physics. |
| 会议录出版者 | AMER INST PHYSICS ; MELVILLE ; CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA |
| 语种 | 英语 ; 英语 |
| 内容类型 | 会议论文 |
| 源URL | [http://hdl.handle.net/123456789/18356]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Gao, R. S.,Zhen, L.,Shao, W. Z.,et al. Study of gamma-ray irradiation effect on permanent magnets[C]. 见:JOURNAL OF APPLIED PHYSICS, 52nd Annual Conference on Magnetism and Magnetic Materials, Tampa, FL, Web of Science. |
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