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Analysis of dielectric parameters in paraelectric-ferroelectric biphasic region of antiferroelectric liquid crystal mixture

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Abstract

The dielectric characterization of induced antiferroelectric liquid crystal mixture W-132A was carried out at various temperatures. Dielectric strengths, relaxation frequencies and distribution parameters of a sample oriented in planar direction were evaluated from the dielectric spectra in a wide frequency spectrum of 0.1 Hz to 10 MHz. Two dielectric dispersion modes were detected in the SmA* phase and biphasic region of SmA*-SmC* phase. The high frequency dielectric dispersion was associated to soft mode whereas low frequency dielectric dispersion was attributed to space charge polarization.

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Acknowledgements

We are thankful to Professor R. Dabrowski, Military University of Technology, Warsaw -00-908, Poland for providing the AFLC mixture. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2021R1A2C1092509).

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Authors and Affiliations

  1. Department of Applied Science and Humanities, Institute of Engineering & Technology, Dr. Rammanahar Lohia Avadh University, Ayodhya, 224001, India

    Anoop K. Srivastava & Ratindra Gautam

  2. Department of Physics & Electronics, Dr. Rammanahar Lohia Avadh University, Ayodhya, 224001, India

    Anil Kumar

  3. Department of Physics, Sharda University, Knowledge Park III, Greater Noida, Uttar Pradesh, 201 306, India

    Pankaj K. Tripathi

  4. Department of Chemical Engineering, Konkuk University, Seoul, 05029, South Korea

    Vijay Singh

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  1. Anoop K. Srivastava
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  2. Anil Kumar
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  4. Ratindra Gautam
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  5. Vijay Singh
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Correspondence to Vijay Singh.

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Srivastava, A.K., Kumar, A., Tripathi, P.K. et al. Analysis of dielectric parameters in paraelectric-ferroelectric biphasic region of antiferroelectric liquid crystal mixture. Indian J Phys 98, 569–575 (2024). https://doi.org/10.1007/s12648-023-02831-8

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  • DOI: https://doi.org/10.1007/s12648-023-02831-8

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