Abstract

Ordering temperatures and magnetizations versus applied fields have been measured for the hexagonal phases RAu 3.6. The compound PrAu 3.6 can be regarded as a Van Vleck paramagnet with appreciable exchange. The Sm, Tb and Dy compounds show antiferromagnetic behaviour. HoAu 3.6 may have an ordering point below 5 K. GdAu 3.6 has two ordering points. The Curie paramagnetic temperatures of all RAu 3.6 compounds are negative with values between −12.5 K (Tb) and −0.7 K (Nd). The observed effective moments are almost the same as the rare earth trivalent ion moments.

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