Fig. 1
From: Innovative cryogenic cooling material using spin frustration from abundant elements
Comparison of conventional and frustration-based systems. Schematic of the temperature dependence of specific heat in: (a) conventional rare-earth antiferromagnet (AF) with exchange interaction J < ~ 10 K and (b) transition-metal AF with J > ~ 100 K for non-frustrated (square lattice) and frustrated (triangular lattice) systems.
