Spin freezing of the spin-glass Fe0.25Zn0,75F2: a Mossbauer study
| 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. |
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| Jazyk: | angličtina |
| Rok vydání: | 1991 |
| Předmět: | |
| Zdroj: | Repositório Institucional da UFRN Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
| Popis: | 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 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 |
| Databáze: | OpenAIRE |
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