Magnetic properties of Fe-Cu-Nb-Si-B nanocrystaliine magnetic alloys
| Contribuinte(s) |
Universitat de Barcelona |
|---|---|
| Data(s) |
04/05/2010
|
| Resumo |
Several ribbons of composition Fe73.5Cu1Nb 3Si16.5B6 and Fe73.5Cu1 Nb3Si13.5B9 were prepared by annealing the as-quenched samples between 525°C and 700°C; which induced nucleation of nanocrystallites of Fe bcc-type composition. Mean grain sizes were obtained from X-ray diffraction. Static magnetic properties were measured with both a Magnet Physik Hysteresis-Graph (up to 200 Oe) and a SHE SQUID magnetometer (up to 50 kOe). Soft magnetic parameters (coercive field and initial permeability) were very sensitive to grain size. The ZFC magnetization at low field showed a broad peak at a temperature TM, thus signalling a certain distribution of nanocrystalline sizes, and TM strongly decreased when the mean grain size decreased. Isothermal magnetization curves at low temperature showed the expected asymptotic behavior of a random magnet material at low and high fields. |
| Identificador | |
| Idioma(s) |
eng |
| Publicador |
IEEE |
| Direitos |
(c) IEEE, 1994 info:eu-repo/semantics/openAccess |
| Palavras-Chave | #Difracció de raigs X #Materials magnètics #Aliatges #Magnetisme #Materials nanoestructurats #X-ray diffraction #Magnetic materials #Alloys #Magnetism #Nanostructured materials |
| Tipo |
info:eu-repo/semantics/article |
