A new pair potential is proposed, and a new analytic MEAM is developed by a
dding a modification term to total energy with the pair potential. The mode
l can reproduce the shear moduli of all BCC transition metals accurately, e
specially the negative Cauchy pressure for the metal Cr. The mono- and di-v
scancy formation and migration energies for all BCC transition metals are c
alculated with the model. The calculations are in agreement with the availa
ble experimental data. (C) 1999 Elsevier Science B.V. All rights reserved.