Figure 2

Calculated phonon dispersion band structures for (a) Cr-, (b) Mn-, and (c) Fe-doped \(\text {Lu}_2 \text {NiIrO}_6\) double perovskite oxides.

Calculated phonon dispersion band structures for (a) Cr-, (b) Mn-, and (c) Fe-doped \(\text {Lu}_2 \text {NiIrO}_6\) double perovskite oxides.