ULTRASONIC INVESTIGATION OF MODIFIED CRITICAL BEHAVIOUR IN THE STRONG RANDOM-FIELD SYSTEM Dy ( As0.17V0.83) O4
Résumé
Ultrasonic measurements of the soft-mode elastic constant 1/2 (C11 - C12) have been performed to investigate the pseudospin susceptibility of the random-field system Dy (AsxV1-x) O4. The susceptibility critical exponent γ = 1.73 ± 0.07 for x = 0.17 is much larger than for the pure compound (x = 0), in reasonable agreement with predictions of the random-field Ising model.
Domaines
Articles anciensOrigine | Accord explicite pour ce dépôt |
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