Pretransitional phenomena in dilute crystals with first-order phase transition

摘要

Pretransitional phenomena at first-order phase transition in crystals dilutedby 'neutral' impurities (analogue of nonmagnetic atoms in dilute magnets) areconsidered. It is shown that field dependence of order parameter becomesnonanalytical in the stability region of the ordered phase, while smeared jumpsof thermodynamic parameters and anomalous (non-exponential) relaxation appearnear transition temperature of pure crystal.