The Gibbs-Thomson coefficient, Gamma, the effective entropy change, Delta S-f, the solid-liquid interfacial energy, sigma(SL), and the grain boundary energy, sigma(GB), for solid Zn solution at the eutectic Zn-Sn-Mg ternary alloy have been calculated using the grain boundary groove method with Bridgman-type directional solidification apparatus. (C) 2014 Elsevier B.V. All rights reserved.