Fig. 5.

In situ XAS spectra of Ce L₃-edge with α-Ce₃Al compound (A) and Ce₃Al metallic glass (B) as the starting materials. Starting phases during compression (black curves), and fcc alloy after conversion and during decompression (blue curves) are shown. The numbers on each pattern denote the pressures, and the arrows point to the 4f⁰ and 4f¹ components. The appearance of the 4f⁰ feature indicates the delocalization of 4f electron, which coincides with the relatively sharp drop in pressure dependence observed in Ce₃Al volume in Fig. 4.