Intersublattice exchange interactions in the R2Co7B3 compounds (R = heavy rare earth)

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作者：

Polish Acad of Sciences, Poznan, Poland ^{[1
]}

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来源：

J Magn Magn Mater | / 1-2卷 / 113-118期

关键词：

Approximation theory - Calculations - Crystal lattices - Intermetallics - Magnetic moments - Temperature;

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摘要：

The experimental values of Curie temperatures of hexagonal R2Co7B3 (R = heavy rare earth) compounds are used to calculate the effective intersublattice exchange interactions, JRCo, between R and Co sublattices. A mean field approximation is used. The compounds belong to the Rn+1Co3n+5B2n family. The R2Co7B3 is a combination of CaCu5 and CeCo3B2-type structures. The JRCo has a tendency to decrease with increasing atomic number of the rare earth partner. A similar tendency has been found for other Fe and Co-based compounds.

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