Fig. 1: XRD patterns and structural refinement of coexisting (La,Y)H10 phases.
From: X-ray-diffraction and electrical-transport imaging of superconducting superhydride (La,Y)H10
Top: Experimental synchrotron XRD patterns and Le Bail refinements of the \({Fm}\bar{3}m\) and \(P{6}_{3}/{mmc}\) (La,Y)H10 phases at 153 GPa. The experimental data, fit, and residuals are shown in red, black, and gray, respectively. Refined lattice parameters for both phases are indicated. Bottom: Experimental XRD patterns of La0.9Y0.1 at 158 GPa before and after laser heating. The pre-heating pattern corresponds to the distorted-cubic \({Fmmm}\) phase. After laser heating, the diffraction pattern shows the formation of (La,Y)H10 phases, consistent with the refined structures shown above. Reflections from Pt electrodes are explicitly labeled, while peaks marked with “*” correspond to unidentified or sample-environment contributions. Insets show representative 2D diffraction images for reference.
