Dielectric characteristics of LiCo_(3/5)Cu_(2/5)V0 _4 ceramics

摘要

The LiCo_(3/5)Cu_(2/5)VO_4 ceramics was produced by the solution-based chemical method and its dielectric and electrical modulus properties were investigated using complex impedance spectroscopy. Frequency dependence of dielectric constant (ε_r) at some selected temperatures shows low-frequency dispersion. Temperature dependence of ε_r at 1, 100, 200, 500 kHz and 1 MHz exhibits same value of transition temperature (T_c=300 °C) with (ε_r) _(max). ～ 5147, 396, 270, 162 and 111, respectively. Complex electrical modulus study describes the presence of non- Debye type conductivity relaxation in the material.