Activated dynamic scaling and magnetic ordering in Cd1−xMnxTe : Spin glass or random antiferromagnet? (invited)
- 15 April 1988
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 63 (8) , 3291-3296
- https://doi.org/10.1063/1.340815
Abstract
The dynamics of magnetic fluctuations have been investigated in the random frustrated antiferromagnet Cd1−xMnxTe. The frequency‐dependent susceptibility, χ’(ω,T) has been measured by Faraday rotation for x=0.4 and 0.65. The departure of the susceptibility from equilibrium Δχ’=[χeq(T)−χ’(ω,T)]/χeq(T) is found to obey activated dynamic scaling similar to that seen in random field systems. These results in conjunction with neutron measurements by others which revealed the abrupt saturation of the antiferromagnetic correlation length for x=0.65 at the onset of slow dynamics near Tc suggest a dynamically inhibited transition to a type‐III AF state rather than a spin‐glass transition.This publication has 31 references indexed in Scilit:
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