B. Leclercq et C. Rigaux, DYNAMIC SCALING IN CD1-XMNXTE SPIN-GLASSES - A PROBE OF THE SPIN AUTOCORRELATION FUNCTION, Physical review. B, Condensed matter, 48(18), 1993, pp. 13573-13578
The dynamic scaling relations for the frequency-dependent magnetic sus
ceptibility are derived, using the spin autocorrelation function q(t)
is-proportional-to t(-a) exp[-(t/tau)b], which successfully describes
results from Monte Carlo simulations on a three-dimensional Ising spin
-glass model. This functional form accounts very well for the observed
frequency and temperature dependences of the imaginary component of t
he ac magnetic susceptibility in Cd1-xMnxTe, above the spin-glass tran
sition temperature T(c). The parameters a and b obtained from the scal
ing analysis are very comparable to those found for Fe0.5Mn0.5TiO3, cl
ose to T(c), emphasizing the similar critical behavior of short-range
insulating spin glasses, of Heisenberg and Ising type.