High field magnetization and AC susceptibility studies of Ce3Rh2Ge2

Abstract We studied the magnetic properties in Ce 3 Rh 2 Ge 2 polycrystalline samples using magnetization and AC susceptibility measurements. Below 7 K , where the long-range antiferromagnetic ordering occurs, the magnetization shows a metamagnetic-like jump at 3 T , and exhibits several small wriggles between 3 and 11 T . In AC susceptibility, except the sharp peak at 7 K we observed an additional small peak at 4 and 11 K in low applied fields, respectively. These behaviors indicate the complex magnetic structure of Ce 3 Rh 2 Ge 2 at low temperatures.