Araújo, José Humberto deCunha, Joao Batista Marimon daVasquez, AdalbertoMontenegro, F. C.Rezende, S. M.Amara, LovelynMoro, J. T.Coutinho-Filho, Mauricio D.2021-11-232021-11-231991-01ARAÚJO, Jose Humberto de; CUNHA, Joao Batista Marimon da; VASQUEZ, Adalberto; AMARAL, L. ; MORO, J. T. ; MONTENEGRO, F. C. ; RESENDE, S. M. ; COUTINHOFILHO, M. D. . Spin Freezing of the Spin-Glass Fe0,25Zn0,75F2. Brazilian Journal of Physics, Brasil, v. 21, p. 115-120, 1991. Disponível em: http://www.sbfisica.org.br/bjp/. Acesso em: 23 nov. 2021.Print: 0103-9733 Electronic: 1678-4448https://repositorio.ufrn.br/handle/123456789/44993We 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 lawSpin freezingSpin-glassFe0.25Zn0,75F2Mossbauerarticle