Embedded-atom Method Predicted That The Basic Physical Properties Of Typical Metal

Using the modified analytic EAM (MAEAM) potentials proposed by Hu et al and lattice dynamics method, the universe physical properties (such as phonon spectra, state density, specific heat, Debye temperature, Griinsisen constant and expansion coefficient) are studied systematically, and compared with experimental data. It is found that the calculated results for bcc metals are quite in good agreement with the experimental data, and the results for fee and hep metals are also successful. For all the calculated physical properties, the results of phonon spectra, state density, specific heat and Debye temperature are better than that of Griinsisen constant and expansion coefficient. As show above, the MAEAM potential is very successful in describing the lattice dynamics and should be improved in calculating non-harmonious affection. The structural stabilities are also studies by calculating the energy difference, which show that the MAEAM potentials are stable. The reasonability and accuracy of the potentials can be checked by calculating the universe physical properties and comparing it with the experimental results, which is very important for the development of MAEAM.