article
Mössbauer study of spin-glass Fe x Zn1−x F2 system
Fecha
1991-11Registro en:
Print: 0304-3843 Electronic: 1572-9540
Autor
Araújo, Jose Humberto de
Cunha, Joao Batista Marimon da
Vasquez, A.
Amaral, L.
Moro, J. T.
Montenegro, F. C.
Rezende, S. M.
Coutinho-Filho, Mauricio D.
Resumen
57Fe Mössbauer effect measurements in the diluted Ising antiferromagnet Fe x Zn1−x F2 withx=0.25 andx=0.57 at temperatures between 4.2 and 55 K, are reported. DC suceptibility measurements show a spin-glass (SG) phase at low temperatures forx≤0.31. Our Mössbauer spectra show a phase transition to a SG state with antiferromagnetic order (AFSG) forx=0.25 and only antiferromagnetic order forx=0.57.