Jump in Sound Velocity between Solid and Liquid Phases at Melting Point in Pure Metals

抄録

Concerning the sound velocity of pure metals at the melting point, the significance of the jump occurring between solid and liquid phases was considered. It was found that (1) the magnitude of the jump of the sound velocity decreases with increasing atomic weight when the elements with the same valency are compared, (2) the shear-wave velocity in solid phase just below the melting temperature can be evaluated from the sound velocities in the solid and liquid phases at the melting point, (3) the Lindemann constant is shown to be dependent on the crystal lattice structure.