Mössbauer Studies of <math>(La1-xBax)2 Cu04</math> Superconducting Oxides

Physics NotePublished

Mössbauer Studies of $<math>(La_{1-x}Ba_x)_2 Cu0_4</math>$ Superconducting Oxides

E. M. B. Saitovitch; Izabel de Souza Azevedo; R. B. Scorzelli; Henrique Saitovitch; S.F. da Cunha; A. P. Guimarães; P. R. Silva; Luiz C. Sampaio

1988

Authors: E. M. B. Saitovitch; Izabel de Souza Azevedo; R. B. Scorzelli; Henrique Saitovitch; S.F. da Cunha; A. P. Guimarães; P. R. Silva; Luiz C. Sampaio
Type: Physics Note
Status: Published
Publication date: 1988
Description: Samples with Cu substituted by small amount of iron (less than 1%) were prepared for x = 0.15, 0.25 and 0.35 mixtures. Despite the fact that there is only one Cu site in the <math>(La_{1-x}Ba_x)_2Cu0_4\,\!</math> compounds the Mössbauer spectra at room temperature indicated the presence of two quadrupole doublets whose behaviour were followed in different steps of samples preparation. They are mostly characteristic of <math>Fe^{+3}\,\!</math> and one of them may be due to the presence of Oxygen or Lanthanium vacancies. The existence of magnetic ordering is investigated by <math>^{57}\,\!Fe</math> Mössbauer measurements at 4.2K for samples with 0.5% Fe.
Year: 1988
Number: CBPF-NF-082/88
Linked to a thesis: No
Linked to a grant: No