Fig. 3: X-ray diffraction (XRD) patterns collected at 38 GPa and 3100 K, and at 50 GPa and 3300 K. | Communications Materials

Fig. 3: X-ray diffraction (XRD) patterns collected at 38 GPa and 3100 K, and at 50 GPa and 3300 K.

From: Experimental and theoretical confirmation of an orthorhombic phase transition in niobium at high pressure and temperature

Fig. 3

The experimental XRD patterns are shown with dots and the Rietveld refinements and the residuals with solid lines. Three rows of vertical ticks show the calculated positions for orthorhombic Pnma-Nb, body-centered cubic bcc-Nb, and B2-NaCl, respectively.

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