Anisotropy of the Electrocaloric Effect in Lead-Free Relaxor Ferroelectrics - Le, Goupil F; Axelsson, A-K; Dunne, LJ; Valant, M; Manos, G; Lukasiewicz, T; Dec, J; Berenov, A; Alford, NM (ADVANCED ENERGY MATERIALS, 2014)