2006/08/30 by Anna N. Morozovska, A. N. Morozovska, Morozovska, A. N. +5
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Resonator Technologies #Conducting polymers and applications #FOS: Physical sciences #Ferroelectric and Piezoelectric Materials #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0608681
10 pages, 3 figures, to be presented at "VIII Ukrainian-Polish Meeting on Ferroelectrics"
arxiv created 2006/08/30 · openalex publication_date 2006/08/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper we study the size effects of the ferroelectric nanotube phase diagrams and polar properties allowing for effective surface tension and depolarization field influence. The approximate analytical expression for the paraelectric-ferroelectric transition temperature dependence on the radii of nanotube, polarization gradient coefficient, extrapolation length, surface tension and electrostriction coefficient was derived. It was shown that the transition temperature could be higher than the one of the bulk material for negative electrostriction coefficient. Therefore we predict conservation and enhancement of polarization in long ferroelectric nanotubes. Obtained results explain the observed ferroelectricity conservation and enhancement in Pb(Zr,Ti)O3 and BaTiO3 nanotubes.