Figure 1: Structure of P2-Na0.6[Cr0.6Ti0.4]O2.

(a) The Rietveld plot for P2-Na0.6[Cr0.6Ti0.4]O2 refined against NPD data collected at 300 K. The red crosses and black and green solid lines indicate the observed and calculated patterns and their difference, respectively. The tick marks indicate the position of the diffraction peaks. Rp=2.08%, Rwp=2.73%. (b,c) General view of the crystal structure and view along the c axis showing splitting of Na1 and Na2 sites from the centres of prisms.