Journal of Nanoparticles / 2014 / Article / Tab 4

Research Article

Preparation of Cerium Orthophosphate Nanosphere by Coprecipitation Route and Its Structural, Thermal, Optical, and Electrical Characterization

Table 4

Activation energy calculated on the basis of Arrhenius formula for cerium orthophosphate (CePO4) at different frequencies.

Serial number Frequency (kHz) Activation energy (eV)

1 5 0.037
2 10 0.033
3 20 0.029
4 50 0.026
5 100 0.025
6 1000 0.018