Magnetic and electronic properties in CeTSi3CeTSi3 and CeTGe3CeTGe3 (T: transition metal)

We investigated the magnetic properties of CeTSi3CeTSi3 (T: Ru, Os, Co, Rh, Ir, Pd and Pt) and CeTGe3CeTGe3 (T: Co, Rh and Ir) by measuring their electrical resistivity and magnetic susceptibility. CeRuSi3CeRuSi3, CeOsSi3CeOsSi3 and CeCoSi3CeCoSi3 do not order magnetically, with a large Kondo temperature of about 200K. The other compounds order antiferromagnetically, and are very similar to each other in their magnetic and electronic properties, which is related to a large crystalline electric field (CEF) splitting energy of the 4f4f electron, about 500K in CeIrSi3CeIrSi3.