The Model of Ferroelectricity in Thiourea

I. Śliwa, W. Wanarski
2011 Acta Physica Polonica. A  
In this paper we propose a mechanism of the phenomenon of ferroelectricity in the molecular crystal of thiourea (SC(NH2)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
more » ... teraction of a pair of two nonpunctual dipoles as a function of the angle of reorientation is derived and discussed.
doi:10.12693/aphyspola.120.516 fatcat:odcy4jptujd4naprwgbdy6xrsi