Effect of pressure on crystal field splitting in CeP

Magnetic properties of CeP at high pressure have been investigated by the measurement of magnetization up to 1.6 GPa. The present result shows the gradual increase of the paramagnetic susceptibility, χ ( T ) and the steep raise of the magnetic transition temperature with increasing pressure. The pressure dependence of χ ( T ) indicates that the contribution of the crystal field at low temperatures was strongly affected by applied pressure. The behaviour of χ ( T , P ) has been analysed by using the crystal field splitting energy and the exchange interactions as the fitting parameters.