Abstract
The dielectric susceptibility of strontium–barium niobate, Sr0.75Ba0.25Nb2 O 6, reveals strong hole-like aging behaviour in its ferroelectric state. The isothermal evolution of the linear susceptibility satisfactorily follows a stretched exponential law. After aging the sample at a selected temperature both rejuvenation and memory effects are observed in temperature cycle experiments. They seem to indicate cluster glass-like properties of the domain state involved.
Acknowledgments
Financial support by KBN (under grant 4 T08A 007 25) and DFG (SPP `Strukturgradienten in Kristallen') is gratefully acknowledged.