Anomalous behaviour of Moessbauer parameters of a YBa2Cu2.875Fe0.125Od superconductor around 110 K
Por:
Gomez R., Aburto S., Marquina V., Marquina M.L., Jimenez M., Quintanar C., Akachi T., Escudero R., Barrio R.A., Rios-Jara D.
Publicada:
1 ene 1988
Resumen:
Transmission Moessbauer spectra at various temperatures were obtained from YBa2Cu2.875Fe0.125O? powder samples. The spectra displayed three quadrupole doublets, one of which behaves differently from the other two. The experimental data infer that the Fe atoms occupy only Cu(1) sites with definite valence states and in three different environments. The model put forward here is consistent with previous experiments.
Filiaciones:
Gomez R.:
Facultad de Ciencias, UNAM, Me´xico, 04510, Mexico
Aburto S.:
Facultad de Ciencias, UNAM, Me´xico, 04510, Mexico
Marquina V.:
Facultad de Ciencias, UNAM, Me´xico, 04510, Mexico
Marquina M.L.:
Facultad de Ciencias, UNAM, Me´xico, 04510, Mexico
Jimenez M.:
Facultad de Ciencias, UNAM, Me´xico, 04510, Mexico
Quintanar C.:
Facultad de Ciencias, UNAM, Me´xico, 04510, Mexico
Akachi T.:
Instituto de Investigacio´n en Materiales, UNAM, Me´xico, 04510, Mexico
Escudero R.:
Instituto de Investigacio´n en Materiales, UNAM, Me´xico, 04510, Mexico
Barrio R.A.:
Instituto de Investigacio´n en Materiales, UNAM, Me´xico, 04510, Mexico
Rios-Jara D.:
Instituto de Investigacio´n en Materiales, UNAM, Me´xico, 04510, Mexico
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