Mössbauer study of spin-glass Fe
x
Zn1?x
F2 system |
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| Authors: | J H de Araújo J B M da Cunha A Vasquez L Amaral J T Moro F C Montenegro S M Rezende M D Coutinho Filho |
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| Institution: | (1) Instituto de Física-Universidade Federal do Rio Grande do Sul, Campus do Vale, 91500 Porto Alegre, RS, Brasil;(2) Departamento de Física-Universidade Federal de Pernambuco, 50739 Recife, PE, Brasil |
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| Abstract: | 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. |
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