The temperature evolution of the optical birefringence of ferroelastic arsenic pentoxide is shown to reflect the order parameter behaviour in the temperature interval from 300 K to T c =575.7 K. The phase transition is second order and the critical exponent of the order parameter is 0.509 (10); deviations from mean-field behaviour were found at temperatures closer than 5 K to T c .
No takes yet. Share an insight, caveat, or question.
Salje et al. (1987) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: