Fig. 3: Temperature/strain-dependent ferroelectric order.

a Strain-dependent XAS linear dichroic (XLD) signal at different temperatures. The filled (open) circle marks the increasing (decreasing) strain sweep directions. The solid line is the fit to a power law behavior as in (b–e). Data are offset vertically for clarity. b–e Fits of power law dependence of ferroelectric order to the lattice strain at different temperatures.