Magnetic properties of acicular ultrafine iron particles
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
20/05/2014
20/05/2014
01/09/2002
|
| Resumo |
Magnetic properties of acicular (similar to60 and similar to200 nm) iron particles, obtained by reduction of alumina-coated goethite particles, are reported. X-ray diffraction and Mossbauer spectroscopy showed that the particles consist of a alpha-Fe core and a thin surface layer of maghemite. Magnetization data indicated an improvement of similar to28% in the saturation magnetization, coercive field, and squareness for particles with similar to60 nm. This magnetic property enhancement of the present particles, whose size is 40% smaller than those commercially available, could result in a similar decrease of the bit-size for higher density of magnetic media. |
| Formato |
1907-1909 |
| Identificador |
http://dx.doi.org/10.1109/TMAG.2002.802816 IEEE Transactions on Magnetics. New York: IEEE-Inst Electrical Electronics Engineers Inc., v. 38, n. 5, p. 1907-1909, 2002. 0018-9464 http://hdl.handle.net/11449/31913 10.1109/TMAG.2002.802816 WOS:000178867200012 |
| Idioma(s) |
eng |
| Publicador |
Institute of Electrical and Electronics Engineers (IEEE) |
| Relação |
IEEE Transactions on Magnetics |
| Direitos |
closedAccess |
| Palavras-Chave | #coercivity #magnetic recording #magnetic variable measurements #metal ultrafine particles #passivation |
| Tipo |
info:eu-repo/semantics/article |
