Deterministic and stochastic behavior in ferroelectric particles

作者：Vargunin Artjom; Oerd Teet; Tammelo Risto^*

来源：Physics Letters A, 2008, 372(48): 7187-7190.

DOI：10.1016/j.physleta.2008.09.057

• Ferroelectrics
• Finite size effects
• Stochastic approach
• Relaxation

The response of a ferroelectric particle to an applied harmonic field is studied using the Fokker-Planck equation approach. The size effect in dielectric susceptibility is interpreted as the complementarity between stochastic resonance and response anomaly of the second-order phase transition. The borderline between stochastic and deterministic behavior is established. Two universal volume-independent ratios of the damping rates are predicted and may be verified in the relaxation experiments. The approach can be generalized also to other finite condensed systems.

• 出版日期2008-12-8