Magnetic Ordering of <math>YBa2 (Cu1-xFex)3 0 7</math>

Nota de FísicaPublicado

Magnetic Ordering of $<math>YBa_2 (Cu_{1-x}Fe_x)_3 0 _7</math>$

E. M. B. Saitovitch; F.J. Litterst; Izabel de Souza Azevedo; R. B. Scorzelli

1988

Autores: E. M. B. Saitovitch; F.J. Litterst; Izabel de Souza Azevedo; R. B. Scorzelli
Tipo: Nota de Física
Status: Publicado
Data de publicação: 1988
Descrição: The Mössbauer spectra of <math>YBa_2(Cu_{1-x}Fex)_30_7\,\!</math> at room temperature show several doublets attributed to Fe in Cu(1) sites with different oxygen configurations. Here we present a systematic study performed at 4.2K for x=0.005, 0.01, 0.03, 0.05, 0.10,0.15. To obtain information about the magnetic ordered state two samples, with x=0.005 and x=0.15, have been studied at 4.2K under <math>B_{ext}=5T\,\!</math>. The Mössbauer spectra indicate that the iron moments are polarized for x=0.005, while in the ordered state (x=0.15) they have an antiferromagnetic or spin-glass-like arrangement with high anisotropy .
Ano: 1988
Número: CBPF-NF-076/88
Vínculo com tese: Não
Vínculo com bolsa: Não