Figure 2
(a) Two-dimensional projection (simulated heating-Guinier pattern) of the observed scattered X-ray intensity for the Hc-cHc system as a function of temperature and diffraction angle. The two-dimensional plot was prepared using the Powder3D suite (Hinrichsen et al. 2006). The changes of the values of (b) the unit-cell volume, (c) the c axis and (d) the a axis are plotted against temperature. The values of the unit-cell parameters are obtained by Pawley refinement of the diffraction patterns. The first vertical line shows the temperature point above which only the cHc phase is observed, and the second one indicates the onset of amorphization (solid symbols refer to the Hc phase, open symbols refer to the cHc phase). |