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Low-ordering-temperature fabrication of FePt by ion irradiation
- Source :
- IEEE Transactions on Magnetics. July, 2004, Vol. 40 Issue 4, p2519, 3 p.
- Publication Year :
- 2004
-
Abstract
- A low temperature ordering of L[1.sub.0] FePt phase was directly achieved by using 2-MeV He-ion irradiation without conventional post-annealing. The coercivity greater than 5700 Oe can be obtained by using ion-irradiation heating at temperature as low as 230[degrees]C. The high beam-current-density results in direct beam heating on samples. In addition, the irradiation-induced heating process provides efficient microscopic energy transfer and creates excess point defects, which significantly enhances the diffusion and promotes the formation of the ordered phase. Index Terms--Beam heating, FePt, irradiation, ordering.
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 40
- Issue :
- 4
- Database :
- Gale General OneFile
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.122261608