article
Spin freezing of the spin-glass Fe0.25Zn0,75F2: a Mossbauer study
Fecha
1991-01Registro en:
Print: 0103-9733 Electronic: 1678-4448
Autor
Araújo, José Humberto de
Cunha, Joao Batista Marimon da
Vasquez, Adalberto
Montenegro, F. C.
Rezende, S. M.
Amara, Lovelyn
Moro, J. T.
Coutinho-Filho, Mauricio D.
Resumen
We report 57~e Mõssbauer measurements in the diluted Ising antiferromagnet Fe0.25Zn0,75F2 at temperatures between 4.2 and 28 K. DC susceptibility measurements in the same sample show a spin-glass phase at a freezing temperature Tg = 10K. We found that for this concentration there is a competitive coexistence of spin-glass behaviour and antiferromagnetic order. The freezing temperature is frequency-dependent and follows a power law