New approach to critical dynamic scaling in random magnets

A new approach to critical dynamic scaling of χ’ ’ is presented wherein β/zν, zν, and ${\mathit{T}}_{\mathit{c}}$ may all be separately determined independent of e made to ${\mathrm{Cd}}_{0.6}$ ${\mathrm{Mn}}_{0.4}$Te where by use of this new procedure it is shown that the data in the critical region above ${\mathit{T}}_{\mathit{c}}$ are inconsistent with activated dynamics. This new procedure applied to other systems, reveals frequent underestimates of zν and overestimates of ${\mathit{T}}_{\mathit{c}}$. Apparent systematic deviations from scaling which are found near and below ${\mathit{T}}_{\mathit{c}}$ are briefly discussed.