Abstract
ABSTRACTThe work presents the review of magnetic properties of the RTxX2, RSn1+xGe1−x and RSn2 compounds. The RTxX2 (where R – rare earth, T – 3d-metal, X – p-electron element: Si, Ge, Sn, and 1 ≥ x > 0) and RSn1+xGe1−x compounds (where x ≈ 0.1) crystallize in the orthorhombic crystal structure of CeNiSi2-type and RSn2 compounds crystallize in ZrSi2-type structure. Both structures are described by the space group Cmcm. The RSn1+xGe1−x compounds seem to be interesting due to the replacement of d-metal to p-electron element. The non-stoichiometric CeNiSi2-type of RTxX2 compounds may be regarded as partially filled ZrSi2-type compounds. The transitions from paramagnetic to antiferromagnetic or ferromagnetic states are observed at low temperatures and there are lots of variants of magnetic structures ranging from simple collinear to the sine-modulated structures with commensurate or incommensurate propagation vector. The comparison of magnetic properties of these compounds may help to find answers to questions concerning mechanisms of interaction between the magnetic moments.
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