Fig. 4

Ring sample of CL-PB2.5 for WAXD measurement during the stretching process (a) and the 2D WAXD profiles of CL-PB2.5 without stretching (b) and stretched at the stretching ratio λ = 4 (c). The stretching direction is horizontal to the images (0° and 180°). Azimuthal intensity profiles of the halo band for the sample with stretching ratios λ = 0 and 4 (d)