Abstract.
Neutron-diffraction experiments reveal that ErFe6Ga6 forms in the tetragonal ThMn12-type of structure (space group I4/mmm). The Fe sublattice orders ferromagnetically below Tc = 509 K. The Er moments order antiparallel to the Fe moments which, below about 250 K, leads to a decrease of the total magnetization. The easy magnetization direction of ErFe6Ga6 is perpendicular to the c-axis in the whole temperature range. Refinement at 2 K shows that ErFe6Ga6 orders ferrimagnetically with Er moments of 8.5 (2) μB and Fe moments at the 8(j) site of 1.9 (1) μB and at the 8(f) site of 1.7 (1) μB, respectively. At room temperature, ErFe6Ga6 exhibits the same type of magnetic order, however with substantially lower Er moments of 1.0 (4) μB and Fe moments at the 8(f) site of 1.2 (2) μB. The Fe moments at the 8(j) site amount to 1.9 (5) μB/Fe.
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Received 24 November 1999 and Received in final form 27 March 2000
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Prokes, K., Gramsma, R., Janssen, Y. et al. Magnetic properties of ErFe6Fa6 studied by magnetization and neutron diffraction. Eur. Phys. J. B 16, 429–434 (2000). https://doi.org/10.1007/s100510070199
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DOI: https://doi.org/10.1007/s100510070199