Figure 4

Optical polarizing microscopy images of [NH3(CH2)5NH3]CdCl4 at (a) phase III (300 K), (b) phase II (403 K), (c) phase I (420 K), and (d) phase I (433 K). The parallel lines represent the ferroelastic twin domain walls.

Optical polarizing microscopy images of [NH3(CH2)5NH3]CdCl4 at (a) phase III (300 K), (b) phase II (403 K), (c) phase I (420 K), and (d) phase I (433 K). The parallel lines represent the ferroelastic twin domain walls.