Physics – Condensed Matter
Scientific paper
1999-05-26
Physics
Condensed Matter
Scientific paper
The diluted Ising antiferromagnet, Fe_{0.31}Zn_{0.69}F_{2}, has been investigated by dynamic susceptibility measurements in zero and and finite applied dc-fields. In zero field, there is a para- to antiferromagnetic phase transition at $T_{N} \approx {20.0 K}$, followed by a dramatic slowing down of the dynamics at low temperatures. The latter described by a pure Arrhenius law. The effect of a superposed dc-field on the antiferromagnetic phase transition and on the low-temperature dynamics is investigated, and a comprehensive static and dynamic phase diagram in the H-T plane is derived. In agreement with earlier results on the same system, $T_{N}(H)$ follows a random-exchange Ising model to random-field Ising model crossover scaling for fields $H \leq 1.5 T$. A random-field induced glassy dynamics appears for higher values of H, where the antiferromagnetic phase transition is destroyed. The low-temperature dynamics shows striking similarities with the behavior observed in reentrant antiferromagnets.
Jonason Kristian
Montenegro F. C.
Nordblad Per
No associations
LandOfFree
Dynamics of the diluted Ising antiferromagnet Fe0.31Zn0.69F2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dynamics of the diluted Ising antiferromagnet Fe0.31Zn0.69F2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics of the diluted Ising antiferromagnet Fe0.31Zn0.69F2 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-218880