Structural phase transitions in the systems with isotropic repulsive potentials
Institution of Russian Academy of Sciences, Joint Institute for High Temperatures RAS - 125412, Izhorskaya st., 13 bld. 2, Moscow, Russia
Accepted: 18 July 2011
A simple analytical approach for the calculation of the phase diagram for polymorphic fcc-bcc transition in systems with isotropic repulsive potentials is proposed. A comparison of the proposed approach with the existing numerical and theoretical data is presented for Yukawa and inverse-power potentials: the emphasis is on the Yukawa model. The influence of the non-linearity (of anharmonic corrections) of the pair interaction forces on the phase-equilibrium curves for fcc-bcc and solid-liquid phase transitions is considered.
PACS: 52.27.Lw – Dusty or complex plasmas; plasma crystals / 52.27.Gr – Strongly-coupled plasmas / 82.70.Dd – Colloids
© EPLA, 2011