Fig. 5: Powder diffraction patterns of experimental samples.

Powder diffraction patterns obtained from pieces of the arc melted La-Co-Pb pellet (left column (a, c and e): the 3:1:1 sample; right column (b, d and f): the 18:28:3 sample) after annealing 650 °C for 1 week, compared to calculated PXRD of the predicted La3CoPb (a and b) and La18Co28Pb3 (c and d) ternary phases, and the known La6Co13Pb phase (e and f), respectively.