  We present a data set of calculated Curie temperatures for the main-phase
compounds of rare-earth permanent magnets. We employ ab initio electronic
structure calculations for the itinerant ferromagnetism and an effective spin
model for the finite-temperature magnetism. Curie temperatures are derived on
the basis of a classical Heisenberg model mapped via Liechtenstein's formula
for atomic-pair-wise exchange couplings. Relative trends with respect to the
species of rare-earth elements in calculated Curie temperatures for R2Fe14B are
in agreement with experimental trends. Quantitative comparison between
calculation and experimental data found in the literature point to an effective
range of the exchange couplings imposing a limit on the validity range of the
effective spin model.
