The Model of Ferroelectricity in Thiourea

• Authors: I. Śliwa , W. Wanarski
• Languages of publication: EN

Abstracts

EN

In this paper we propose a mechanism of the phenomenon of ferroelectricity in the molecular crystal of thiourea (SC(NH_2)_2). The mechanism is based on the model of interaction between two molecular electric dipoles. The dipoles are not idealized to points - they have a finite length. Besides, they can reorient mutually and the reorientation is determined by the crystal structure specified by the experimental structural research. On the basis of this theory, a formula for the potential energy of interaction of a pair of two nonpunctual dipoles as a function of the angle of reorientation is derived and discussed.

Keywords

EN

77.80.-e; 77.80.Bh

Discipline

• 77.80.-e: Ferroelectricity and antiferroelectricity

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 120
• Issue: 3
• Pages: 516-520

Dates

published

2011-09

received

2010-12-21

(unknown)

2011-03-24

Contributors

author

I. Śliwa

• Physics of Liquid Crystals Laboratory, Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, PL-60-179 Poznań, Poland

author

W. Wanarski

• Physics of Liquid Crystals Laboratory, Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, PL-60-179 Poznań, Poland

References

• 1. A.L. Solomon, Phys. Rev. 104, 1191 (1956)
• 2. G.J. Goldsmith, J.G. White, J. Chem. Phys. 31, 1175 (1959)
• 3. H. Futama, J. Phys. Soc. Jpn. 17, 434 (1962)
• 4. M.M. Elcombe, J.C. Taylor, Acta Crystallogr. A 24, 410 (1968)
• 5. C. Calvo, J. Chem. Phys. 33, 1721 (1960)
• 6. A.H. Piekara, Phys. Diel. Radiospectr. X/2, 175 (1978) (in Polish)
• 7. A.H. Piekara, Phys. Status Solidi B 132, 277 (1985)
• 8. A.H. Piekara, A.B. Więckowski, Phys. Status Solidi B 197, 259 (1996)
• 9. J.S. Hoye, P.C. Hemmer, Phys. Norv. 7, No. 1 (1973)
• 10. K. Gesi, J. Phys. Soc. Jpn. 26, 1 (1969)
• 11. J. Klimowski, W. Wanarski, D. Ożgo, Acta Phys. Pol. A 48, 307 (1975)
• 12. J. Klimowski, W. Wanarski, D. Ożgo, Phys. Status Solidi A 34, 697 (1976)
• 13. Ankita Banerji, S.K. Deb, J. Phys. Chem. B 111, 10915 (2007)
• 14. W. Wanarski, Z. Zagórski, Phys. Status Solidi A 47, K45 (1978)
• 15. W. Wanarski, Acta Phys. Pol. A 56, 197 (1979)

Identifiers

DOI

10.12693/APhysPolA.120.516