Magnetic and structural characterization of mechanically alloyed Fe_50-Co_50 samples.
| dc.contributor.author | Pérez Alcázar, Germán A. | |
| dc.contributor.author | Zamora, Ligia Edith | |
| dc.contributor.author | Marco, José Francisco | |
| dc.contributor.author | Romero, Juan José | |
| dc.contributor.author | González, Jesús María | |
| dc.contributor.author | Palomares, Francisco Javier | |
| dc.date.accessioned | 2012-10-04T19:01:45Z | |
| dc.date.available | 2012-10-04T19:01:45Z | |
| dc.date.issued | 2012-10-04 | |
| dc.description.abstract | Samples of nominal composition Fe50Co50 were produced by mechanical alloying by using a planetary ball mill and different milling times. The samples were studied via X-ray diffraction, Mössbauer spectroscopy, and X-ray photoelectron spectroscopy to characterize the phase distribution resulting from the milling process. The Mössbauer data indicated that Co starts diffusing into Fe after 8 h of milling. Between t = 8h and t = 24 h the sample has a heterogeneous composition, presenting a bimodal hyperfine field distribution with maxima centred at 34.3 T and 35.8 - 36.4 T, compatible with the presence of different Fe environments (richer in Co and richer in Fe, respectively). After 48 h of milling, the sample presents a more homogeneous composition showing an almost symmetric hyperfine magnetic field distribution centred at H=34.9 T, indicating that a disordered equiatomic FeCo solid solution has already been formed. The X-ray photoelectron spectroscopy data indicate that the native oxide layer formed on the freshly milled samples contains Co2+, Fe2+ and Fe3+ oxides. After complete removal of this native oxide layer by Ar ion bombardment, X-ray photoelectron spectroscopy analysis yields the composition of the nominal equiatomic Fe50Co50 alloy. | en |
| dc.identifier.uri | https://hdl.handle.net/10893/3426 | |
| dc.language.iso | eng | spa |
| dc.rights.accessrights | info:eu-repo/semantics/openAccess | spa |
| dc.subject | Magnetic and structural | en |
| dc.title | Magnetic and structural characterization of mechanically alloyed Fe_50-Co_50 samples. | spa |
| dc.type | Artículo de revista | spa |
| dspace.entity.type | Publication |