Frequency and Temperature Effect on Dielectric Properties of Acetone and Dimethylformamide
M. Y. Onimisi *
Department of Physics, Nigerian Defence Academy, Kaduna, Nigeria
J. T. Ikyumbur
Department of Physics, Federal College of Education, Pankshin, Plateau State, Nigeria
S. G. Abdu
Department of Physics, Kaduna State University, Kaduna, Nigeria
E. C. Hemba
Department of Physics, Federal College of Education, Pankshin, Plateau State, Nigeria
*Author to whom correspondence should be addressed.
Abstract
The dielectric behavior of both acetone and dimethylformamide (DMF) were examined in the presence of an electric field. The electrical conductivity of both solvents was used to estimate the complex permittivity of acetone and dimethylformamide. The relaxation time of the solvents at various temperatures was estimated. The experimental static permittivity values together with the estimated complex permittivity, and relaxation time were substituted in the Debye equations to generate the dielectric constant and the corresponding loss factor at various frequencies using maple-13 programme. Result for the dielectric constant indicates that at frequency 0.1 GHz and temperature 10°C, the calculated value for acetone was 22.4637 and that of DMF was 40.3380. This shows that an increase in dielectric constant caused a corresponding decrease in the loss factor, which means an inverse relation between the frequency and temperature. The result of calculations of the dielectric constant also compared well with the experimental values for both acetone and DMF at the same frequency temperature of and respectively.
Keywords: Complex permittivity, acetone, dimethylformami, dielectric, relaxation time