Study of the nonlocality in the Animalu transition-metal model potentials

Numerical calculations have been made to estimate the nonlocality in the recently formulated transition-metal model potential (TMMP) by Animalu, and these have been checked against other model potentials. The overall results indicate that the contributions of the $d$ electrons tend to make the TMMP more nonlocal than simple-metal model potential. The present conclusions are in agreement with other theoretical calculations of lattice dynamics and phonon spectra.