INTECIN   20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Characterization of Ag-Ge-Se bulk glasses by means of Mössbauer effect on 57Fe and 119Sn atomic nuclei
Autor/es:
B.ARCONDO; M.A. UREÑA; J.M. CONDE-GARRIDO; J.ROCCA; M.FONTANA
Lugar:
Viena, Austria
Reunión:
Conferencia; International Conference on the Applications of the Mössbauer Effect 2009 (ICAME 2009); 2009
Resumen:
In this work, the structure of Fe and Sn doped Agx(Ge0.25Se0.75)100-x (x=0 to 25 at.%) intrinsically inhomogeneous glasses is analyzed employing 119mSn and 57Fe Mössbauer spectroscopy, X-ray diffractometry and scanning electron microscopy. 119mSn enters in the glass as a substitutional impurity for Ge whereas 57Fe enters as an interstitial impurity. Mössbauer spectra obtained with 119mSnO3Ca source, from samples containing about 1% 119Sn for Ge, reveal that the local order of Ge in both amorphous phases is basically the same whereas Mössbauer spectra obtained with 57Fe(Rh) source, from samples containing about 0.5% 57Fe, evidence the differences between both phases.