Fig. 9.

Fitting of the probability histograms in the monoclinic (M) and tetragonal (T) phases to the Poisson and Gaussian functions. (A–D) Histograms at selected values of ΔT for the first (slow) mode in the temperature interval of T₁ = 415–447 K in the M phase. The histogram bin size is chosen to be equal to s₁ so that the histograms represent the probability of k = ΔC/s₁ domain wall jumps. Solid blue and dashed red lines are the fits to the Gaussian and Poisson functions, respectively. (E–H) Decorrelation histograms at selected ΔT values for the temperature interval of T₁ = 590–650 K in the T phase. Solid blue lines are the fits to the Gaussian function. (I and J) Relationships between the best-fit mean and SD of fitted Gaussian function in the M and T phases. The lines are the fits to Eq. 8 with the best-fit parameters presented. Arrows at the top indicate the values of ΔT for the corresponding data points.