Figure 1

Results of the Rietveld refinement of the room-temperature XRD patterns taken for Ho_0.25Er_0.75Ni₂ (a), Ho_0.5Er_0.5Ni₂ (b) and Ho_0.75Er_0.25Ni₂ (c). Peaks marked with S correspond to the superstructure (F-43 m space group) and peaks for the rare-earth (Ho,Er)₂O₃ oxide phases are marked with * and **.