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Combined refinement of (a) SXRD and (b) NPD (average 2θ of bank pairs 58.33 o). Tick marks are displayed below for P′3 (orange) and the O′′′′3 minor impurity (green) in the SXRD sample. Data were collected at room temperature (approximately 25 °C). The square root of intensity is plotted on the y-axis for visual clarity. Insets show the superstructure peak region.
