Solid–liquid interfacial energy and its anisotropy measurement from double grain boundary grooves

The accurate determination of solid–liquid interfacial energy and its anisotropy is important for solidification research. In previous measurements using the grain boundary groove method, we found that ignoring anisotropy caused significant uncertainty in measurements of the mean interfacial energy. We thus present an improved grain boundary groove method to eliminate this uncertainty and to measure both the mean interfacial energy and its anisotropy accurately. The validity of this method was testified by the measurement results of pivalic acid and succinonitrile.