Dielectric and electro-optical properties of Mn-12-acetate and ferroelectric liquid crystal composite
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Dielectric and electro-optical properties of Mn-12-acetate and ferroelectric liquid crystal composite
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| Creator |
Verma, Shilpi
Choudhary, Amit Singh, Priti Biradar, Ashok M. Singh, Surinder P. |
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| Subject |
Chemistry
Crystallography Materials Science |
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| Description |
The impact of single-molecule magnet (SMM), Mn-12-acetate, on the dielectric properties of ferroelectric liquid crystal (FLC) has been investigated by dielectric spectroscopy and electro-optical techniques in a dual electrode sample cell (DESC). The temperature-dependent dielectric studies on Mn-12-acetate/FLC composite have revealed the enhancement in the ferroelectric (smectic C*) to paraelectric (smectic A*) phase transition temperature by 3.5 degrees C. The relaxation process corresponding to Goldstone mode in the ferroelectric phase of the composite is found to be slower compared to pure FLC sample. The electrical response for an input triangular wave shows the existence of one extra polarisation peak in Mn-12-acetate/FLC composite which is ascribed to the induced dipole moment in Mn-12-acetate molecule. The electro-optical texture of Mn-12-acetate/FLC composite revealed that the incorporation of SMM in FLC significantly improve the memory effect.
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| Publisher |
Taylor & Francis
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| Date |
2017-02
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2658/1/Dielectric%20and%20electro-optical%20properties%20of%20Mn12-.pdf
Verma, Shilpi and Choudhary, Amit and Singh, Priti and Biradar, Ashok M. and Singh, Surinder P. (2017) Dielectric and electro-optical properties of Mn-12-acetate and ferroelectric liquid crystal composite. Liquid Crystals , 44 (3). pp. 464-472. ISSN 0267-8292 |
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| Relation |
http://npl.csircentral.net/2658/
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