Fig. 2
From: Innovative cryogenic cooling material using spin frustration from abundant elements
Crystal and magnetic structures, and magnetic and calorimetric properties of CuFeO2. (a) Crystal structure of CuFeO2, showing triangular lattice layers constructed by magnetic Fe3+ and separated by nonmagnetic Cu1+ and O2−. Magnetic structures of the (b) PD state and (c) 4SL AF state. (d) Temperature dependence of inverse magnetic susceptibility. (e) Magnetic susceptibility of single-crystal CuFeO2 measured under a 100 Oe applied field along the hexagonal c-axis. (f) Temperature dependence of specific heat, comparing single-crystal and polycrystalline CuFeO2 with HoCu2and Pb. (taken from Ref22.) contains the data for single-crystal CuFeO2.
