Instability of long-range order in a d = 3 random-field Ising model system: Fe xZn1-xF2

AUTOR(ES)

Montenegro, F. C., Lima, K. A., Torikachvili, M. S., Lacerda, A. H.

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2000-12

RESUMO

Instabilities of long-range order are observed in samples of the d = 3 dilute uniaxial antiferromagnet Fe xZn1-xF2 with x = 0:56 and 0.41, under strong random fields. The onset of instability, mapped in the (H, T) phase diagrams of the samples, reveals that the H, T and x dependence of the effective random field is in qualitative agreement with a mean-field expression predicted in the weak-field limit for site diluted antiferromagnets.

Documentos Relacionados

• Critical behavior of ising models with random long-range (small-world) interactions
• Long-range order in the src SH3 folding transition state
• Tsallis scaling in the long-range Ising chain with competitive interactions
• Long-range electron transfer
• Long-range tilt orientational order in phospholipid monolayers: a comparative study.