We succeeded in growing the single crystals of RPt2Ge 2 (R: La-Ho) with the monoclinic LaPt2Ge2- type structure. Most of RPt2Ge2 compounds order antiferromagnetically, approximately following the de Gennes scaling. Among them, CePt2Ge2 with a Néel temperature T N1 - 2.4 K indicates a change of the magnetic structure below T N2 - 1.8 K, with an ordered moment of 0.70μB/Ce. The pressure experiment was also carried out for CePt2Ge2 by measuring the electrical resistivity. The critical pressure, where the Néel temperature becomes zero, is 7-8 GPa at which the heavy fermion state is realized. Superconductivity was, however, not observed experimentally.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)