Abstract
AbstractAC permeability measurements of the reentrant spin glass system CdCr2xIn2−xS4 (0.85 < x ≦ 1) are performed on toroidal shaped samples by using the transformer technique since the demagnetizing factor is minimized. The complex permeability observed is very close to the true initial permeability. The abrupt decrease of μ' at low temperatures is an intrinsic effect, probably related to the transition to the reentrant spin glass state. The out‐of‐phase permeability presents a maximum at the transition temperature TRSG. The frequency dependence of TRSG is studied (130 Hz ≦ v ≦ 100 kHz). Its variation corresponds with the explanation of reentrant properties based on the existence of clusters of which the freezing destroys the ferromagnetic order.
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