S Acharyya
Articles written in Pramana – Journal of Physics
Volume 61 Issue 4 October 2003 pp 759-772 Brief Reports
Relaxation phenomena of polar non-polar liquid mixtures under low and high frequency electric field
Simultaneous calculation of the dipole moment μ_{j} and the relaxation time τ_{j} of a certain number of non-spherical rigid aliphatic polar liquid molecules (j) in non-polar solvents (i) under 9.8 GHz electric field is possible from real ε′_{ij} and imaginary ε″_{ij} parts of the complex relative permittivity ε*_{ij}. The low frequency and infinite frequency permittivities ε_{0ij} and ε_{∞ij} measured by Purohit
Volume 70 Issue 3 March 2008 pp 543-552 Research Articles
Dielectric relaxation of binary polar liquid mixture measured in benzene at 10 GHz frequency
S Sahoo K Dutta S Acharyya S K Sit
The dielectric relaxation times $\tau_{jk}$'s and dipole moments $\mu_{jk}$'s of the binary ($j_{k}$) polar liquid mixture of N,N-dimethyl acetamide (DMA) and acetone (Ac) dissolved in benzene (i) are estimated from the measured real $\sigma_{ijk}^{'}$ and imaginary $\sigma_{ijk}^{''}$ parts of complex high frequency conductivity $\sigma_{ijk}^{*}$ of the solution for different weight fractions $w_{jk}$'s of 0.0, 0.3, 0.5, 0.7 and 1.0 mole fractions $x_{j}$ of Ac and temperatures (25, 30, 35 and 40°C) respectively under 9.88 GHz electric field. $\tau_{jk}$'s are obtained from the ratio of slopes of $\sigma_{ijk}^{''} - w_{jk}$ and $\sigma_{ijk}^{'} - w_{jk}$ curves at $w_{jk} \rightarrow 0$ as well as linear slope of $\sigma_{ijk}^{''} - \sigma_{ijk}^{'}$ curves of the existing method (Murthy
Volume 94, 2020
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