INVESTIGADORES
MOYA Javier Alberto
congresos y reuniones científicas
Título:
From Fe3Si towards Fe3Ge in Finemet like nanocrystalline alloys: Mössbauer Spectroscopy
Autor/es:
J. A. MOYA, V. J. CREMASCHI AND H. SIRKIN
Lugar:
La Plata, Argentina
Reunión:
Workshop; 35th Anniversary of Hyperfine Interactions at La Plata; 2005
Institución organizadora:
Departamento de Física - UNLP
Resumen:
Nanocrystalline Finemet-type ribbons with different Si/Ge ratio [Fe73.5Si13.5_xGexNb3B9Cu1 (x = 7, 8, 10 and 13.5)] were studied by means of Mössbauer spectroscopy and X-ray diffraction. The trend to form the non-stoichiometric DO3 Fe3Si structure in Finemet alloys (x = 0) is confirmed as Si is substituted for Ge. Results also indicate that the crystalline fraction increases when Si is gradually replaced with Ge. The hyperfine magnetic fields and the isomer shifts are characterised by a quasi-linear relationship with the Ge content of the nanocrystals.
