Abstract
Magnetometric and neutron diffraction studies of polycrystalline NdCo 2GE 2, ErCo 2Ge 2 and PrFe 2Ge 2 compounds were carried out in the temperature range between 4.2 and 300 K. All samples are antiferromagnetic with Néel temperature 26.5, ∼ 4.2 and 13 K, respectively. The RECo 2Ge 2 compounds have collinear antiferromagnetic order of +−+− type. For PrFe 2Ge 2 a sinusoidal magnetic structure is observed. Magnetic moment is localized on RE atoms only and is equal to that of RE 3+ free ion value. In ErCo 2Ge 2 the magnetic moment of Er atoms is perpendicular to the c-axis, whereas for remaining compounds it is parallel to the c-axis.
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