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We present a data set of calculated Curie temperatures for the main-phasecompounds of rare-earth permanent magnets. We employ ab initio electronicstructure calculations for the itinerant ferromagnetism and an effective spinmodel for the finite-temperature magnetism. Curie temperatures are derived onthe basis of a classical Heisenberg model mapped via Liechtenstein's formulafor atomic-pair-wise exchange couplings. Relative trends with respect to thespecies of rare-earth elements in calculated Curie temperatures for R2Fe14B arein agreement with experimental trends. Quantitative comparison betweencalculation and experimental data found in the literature point to an effectiverange of the exchange couplings imposing a limit on the validity range of theeffective spin model.

Calculated Curie temperatures for rare-earth permanent magnets: ab initio inspection on localized magnetic moments in d-electron ferromagnetism