Abstract
We have synthesized the compounds RE2AgGe3 (RE =Ce, Pr, Nd) by arc melting. The crystal structure obtained from single crystal and powder X-ray diffraction suggests that these compounds crystallize in the α-ThSi2 structure type. The magnetic susceptibility data of Ce2AgGe3 follows Curie–Weiss (CW) law above 25K without any magnetic ordering down to 2K. The effective magnetic moment (μeff) was calculated as 2.53 μB/Ce and negative Curie paramagnetic temperature (θp)=−2.4K hint weak antiferromagnetic coupling among the adjacent spins. Pr2AgGe3 shows a complex magnetic behavior wherein the magnetic susceptibility at field cooled and zero field cooled modes bifurcates at 11.5K with the latter undergoing a cusp like maxima, probably due to weak ferromagnetic interaction. The θp and μeff obtained are 4K and 4.33μB/Pr, respectively. Nd2AgGe3 undergoes multiple magnetic transitions. Temperature dependent resistivity data reveals that three compounds are metallic in nature.
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