Magnetoelectric Effect In Antiferromagnetic Linipo4 In Pulsed Magnetic Fields

The magnetoelectric effect in single-crystal antiferromagnetic LiNiPO4 (T-N = 29.8 K) is studied in pulsed magnetic fields up to 28 T. The electric polarization along the crystallographic axis a induced by a magnetic field H parallel to c is measured. It is found that electric polarization develops in a low-field phase I (fields from 0 to 13 T) and a high-field phase V (20-21.5 T). In the low-field phase, the electric polarization has both linear and pronounced cubic dependences on the field. Published by AIP Publishing.