Pressure-induced ferromagnetic to antiferromagnetic phase transition in Ce2Ni5C3

摘要

We have studied an effect of pressure on the ferromagnetism of Ce2Ni5C3 by ac susceptibility using a newly developed Palm cubic anvil cell up to 5.2 GPa. The ferromagnetic transition temperature of 2.3 K at ambient pressure is suppressed to zero at a critical pressure P similar to 3.8 GPa. Instead, another magnetic phase appears above this pressure. This new magnetic phase is considered to be antiferromagnetic from the result of the magnetic field dependence of the ac susceptibility.