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Anisotropic magnetic properties of single crystalline RAu_{2}Ge_{2} (R = La,Ce and Pr) compounds are reported. LaAu_{2}Ge_{2} exhibit a Pauli-paramagneticbehavior whereas CeAu_{2}Ge_{2} and PrAu_{2}Ge_{2} show an antiferromagneticordering with N\grave{e}el temperatures T_{N} = 13.5 and 9 K, respectively. Theanisotropic magnetic response of Ce and Pr compounds establishes [001] as theeasy axis of magnetization and a sharp spin-flip type metamagnetic transitionis observed in the magnetic isotherms. The resistance and magnetoresistancebehavior of these compounds, in particular LaAu_{2}Ge_{2}, indicate ananisotropic Fermi surface. The magnetoresistivity of CeAu_{2}Ge_{2} apparentlyreveals the presence of a residual Kondo interaction. A crystal electric fieldanalysis of the anisotropic susceptibility in conjunction with theexperimentally inferred Schottky heat capacity enables us to propose a crystalelectric field level scheme for Ce and Pr compounds. For CeAu_{2}Ge_{2} ourvalues are in excellent agreement with the previous reports on neutrondiffraction. The heat capacity data in LaAu_{2}Ge_{2} show clearly theexistence of Einstein contribution to the heat capacity.

Magnetocrystalline anisotropy in RAu_{2}Ge_{2} (R = La, Ce and Pr) single crystals