INVESTIGADORES
SILVEYRA Josefina Maria
congresos y reuniones científicas
Título:
Nanocrystal magnetic contribution to Finemet type soft magnetic materials
Autor/es:
MURACA DIEGO; PAGNOLA MARCELO; CREMASCHI VICTORIA J; SILVEYRA JOSEFINA M; SIRKIN HUGO R M
Lugar:
La Plata
Reunión:
Congreso; XI Latin American Conference on the Applications of the Mössbauer Effect; 2008
Resumen:
Magnetic and structural properties of soft magnetic materials with nanocrystalline structure were studied. From Mössbauer Spectroscopy (MS) and X-Ray Diffraction (XRD) we obtained the atomic composition of the nanocrystals in the magnetic material. In particular, we analysed Finemet type alloys with replacement of B for Ge. The studied compositions were: Fe73.5Si13.5Ge2Nb3B7Cu1 and Fe73.5Si13.5Ge4Nb3B5Cu1. The nanocrystalline alloys were obtained by isothermal annealing of the melt spun ribbons at 550 ºC during 1 h. We calculated the magnetic contribution of the nanocrystals to the alloy using a lineal model and the results were compared with experimental measurements of the samples.
