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Smearing of phase transition due to surface effect in ferroelectric nanostructures

2004/10/11 by A. M. Bratkovsky, A.M. Bratkovsky, Bratkovsky, A. M. +2
Engineering · Materials Science · Physics and Astronomy · #Adhesion, Friction, and Surface Interactions #Composite Material Mechanics #FOS: Physical sciences #Material Dynamics and Properties #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci

paper · pdf · doi:10.48550/arxiv.cond-mat/0410263

5 pages, 1 figure. This contains much expanded first part of cond-mat/0402100 with detailed derivation of nonlinear effective equation of state for the net polarization, inhomogeneous part of polarization, and a fit to the data. (v2) extended discussion of the small characteristic length in the problem, relevant reference added

openalex publication_date 2004/10/11 · arxiv created 2004/12/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The boundary conditions, customarily used in the Landau-type approach to ferroelectric thin films and nanostructures, have to be modified to take into account that a surface of a ferroelectric (FE) is a defect of a ``field'' type. The surface (interface) field is coupled to a normal component of polarization and, as a result, the second order phase transitions are generally suppressed and anomalies in response are washed out, as observed experimentally.

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