Answers are grounded in this paper and cite their sources.
A relaxation time of the order parameter in the ferroelectric phase of ammonium lithium sulfate has been determined by analyzing anomalous temperature dependence of the Brillouin peak intensity. It is shown that the anomalies of the elastic constants associated with the phase transition cannot be interpreted by a conventional phenomenological theory and that the effect of nonlinear elasticity dominates in the ferroelectric phase.
No takes yet. Share an insight, caveat, or question.
Shunsuke Hirotsu (1983) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: