From spin induced ferroelectricity to spin and dipolar glass in a triangular lattice: The CuCr1−xVxO2 (0≤x≤0.5) delafossite

The P(T) curves evidencing the aging effect on polarization in CuCr0.5V0.5O2: E=135 kV/m is applied during cooling at different temperatures. The P values and the inflection point of the transition depend on the poling temperature suggesting a relaxor behaviour. This effect related to the spin glass state is not observed for the lowest vanadium content.