Indian Journal of Pure and Applied Physics

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Thermodynamic Model to Study the Phase Transition Properties of SmCA* Phase in Antiferroelectric Mesogen W-358 Series


Affiliations
1 Department of Physics, J.S.S Academy of Technical Education, Uttarahalli, Kengeri, Bangalore-560 060, Karnataka, India
2 Departmentof Humanity and Applied Sciences, School of Management Sciences (SMS), College of Engineering, Lucknow – 226 501, Uttar Pradesh, India

Employing the thermodynamic model which is centred on Landau-de-Gennes theory, the electro-optical properties of the Sm CA* phase in antiferroelectric mesogen has been studied. The wave vector q, the polarisation vector P, and the couplings between these order parameters are used to express the system's free-energy density. The Landau coefficients involved in the free-energy density have been computed using experimental data of tilt angle and spontaneous polarisation in the Sm CA* phase of chiral compounds (6F2OBi and 3F5HBM6(S)). Theoretical and experimental data have been compared in investigations
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  • Thermodynamic Model to Study the Phase Transition Properties of SmCA* Phase in Antiferroelectric Mesogen W-358 Series

Abstract Views: 149  | 

Authors

Abhilasha Singh
Department of Physics, J.S.S Academy of Technical Education, Uttarahalli, Kengeri, Bangalore-560 060, Karnataka, India
Ayushi Rastogi
Departmentof Humanity and Applied Sciences, School of Management Sciences (SMS), College of Engineering, Lucknow – 226 501, Uttar Pradesh, India
Shashidhar R
Department of Physics, J.S.S Academy of Technical Education, Uttarahalli, Kengeri, Bangalore-560 060, Karnataka, India
Sudhaker Dixit
Departmentof Humanity and Applied Sciences, School of Management Sciences (SMS), College of Engineering, Lucknow – 226 501, Uttar Pradesh, India

Abstract


Employing the thermodynamic model which is centred on Landau-de-Gennes theory, the electro-optical properties of the Sm CA* phase in antiferroelectric mesogen has been studied. The wave vector q, the polarisation vector P, and the couplings between these order parameters are used to express the system's free-energy density. The Landau coefficients involved in the free-energy density have been computed using experimental data of tilt angle and spontaneous polarisation in the Sm CA* phase of chiral compounds (6F2OBi and 3F5HBM6(S)). Theoretical and experimental data have been compared in investigations