Extended Data Fig. 1: XRD measurements of La4Ni3O10-δ single crystals and powdered single crystals.
From: Superconductivity in pressurized trilayer La4Ni3O10−δ single crystals
a, XRD measurements of a La4Ni3O10-δ single crystal along the ab plane, revealing no detectable impurity phases. The measurements were carried out on a Bruker D8 Discover diffractometer, utilizing Cu Kα radiation. The inset displays a photograph of a La4Ni3O10-δ single crystal, grown using the high-pressure floating-zone method. b, Rietveld refinement of synchrotron-based powder XRD pattern of La4Ni3O10-δ at ambient pressure and room temperature. The olive solid lines and red circles represent the fitted and experimental data, respectively. The blue solid lines indicate the intensity difference between the data and calculations. The short vertical bars indicate the Bragg peak positions. The data can be well described with the space group P21/a. The data were collected using a powdered La4Ni3O10-δ single crystal. The refinement parameters are summarized in Supplementary Table 3.
