Journal ArticleDOI
Nanoferroelectric domains in ultrathin BaTiO3 films
Y. Drezner,Shlomo Berger +1 more
TLDR
In this paper, the microstructure and electrical properties of ultrathin BaTiO3 films (2-7 nm thick) have been studied by high resolution transmission electron microscopy.Abstract:
The microstructure and electrical properties of ultrathin BaTiO3 films (2–7 nm thick) have been studied. Multidomain structures having 180° domains and 90° domain boundaries were observed by high resolution transmission electron microscopy. The domains, which have a width as small as one unit cell, are mostly oriented in parallel to the film plane. The film exhibits ferroelectric behavior characterized by polarization hysteresis loops and Curie temperature. The leakage current, switching time, and fatigue characteristics of the films are also reported.read more
Citations
More filters
Journal ArticleDOI
Uniform orientation and size of ferroelectric domains
D. Yadlovker,Shlomo Berger +1 more
TL;DR: In this article, high-resolution transmission electron microscopy vertical cross section images showed multiple nanometer-sized ferroelectric domains in each single crystal having uniform size and orientation along the longitudinal axis of the pores.
Journal ArticleDOI
Phase diagrams of epitaxial BaTiO3 ultrathin films from first principles
TL;DR: In this article, the qualitative and quantitative effects of surface interface, thickness and electrical boundary conditions on the temperature-misfit strain phase diagrams of epitaxial (001) BaTiO3 ultrathin films were determined.
Journal ArticleDOI
The size effect of Ba0.6Sr0.4TiO3 thin films on the ferroelectric properties
TL;DR: In this article, the dielectric constant, tunability and maximal polarization of strontium titanate (BST) thin films with different grain sizes and film thickness were investigated.
Journal ArticleDOI
The size-dependent ferroelectric phase transition in BaTiO₃ nanocrystals probed by surface plasmons.
TL;DR: A new technique using shifts in the localized surface plasmon resonance (LSPR) wavelength of gold nanoparticles attached to the surface of the ferroelectric NCs revealed that the ∼16 nm BTO NCs were dominated by surface effects, and as the NC size increased bulk BTO behavior governed, supporting recent propositions about the lack of intrinsic size dependence of the transition temperature.
Journal ArticleDOI
Coexistence of melted and ferroelectric states in sodium nitrite within mesoporous sieves
Cheng Tien,E. V. Charnaya,E. V. Charnaya,Min-Kai Lee,S. V. Baryshnikov,S. Y. Sun,Dieter Michel,Winfried Böhlmann +7 more
TL;DR: In this article, the authors measured 23 Na spin-lattice relaxation and line shape in a large temperature range up to 535 K covering the bulk ferroelectric phase transition point.
References
More filters
Journal ArticleDOI
Observation of nanoscale 180 degrees stripe domains in ferroelectric PbTiO3 thin films.
Stephen K. Streiffer,J. A. Eastman,Dillon D. Fong,Carol Thompson,Carol Thompson,Anneli Munkholm,M. V. Ramana Murty,Orlando Auciello,G. R. Bai,G. B. Stephenson +9 more
TL;DR: In this article, the observation of periodic 180 degrees stripe domains below the ferroelectric transition in thin thin films was studied using x-ray scattering and the dependence of Lambda on d agrees well with theory including epitaxial strain effects, while the suppression of T(C) for thinner films is significantly larger than that expected solely from stripe domains.
Journal ArticleDOI
Ferroelectricity in thin perovskite films
TL;DR: In this article, the authors investigated the ferroelectric properties of thin tetragonal single-crystalline perovskite films of Pb(Zr0.2Ti0.8)O3 grown by off-axis rf magnetron sputtering.
Journal ArticleDOI
Size-induced diffuse phase transition in the nanocrystalline ferroelectric PbTiO 3
TL;DR: In this article, a detailed study of the size dependence of the ferroelectric transition in an ensemble of nanoparticles produced by coprecipitation was performed. But the phase transition was monitored by dielectric measurements, variable temperature x-ray diffraction, and differential scanning calorimetry (DSC).
Journal ArticleDOI
Phase transition in PbTiO3 ultrafine particles of different sizes
TL;DR: In this paper, the size effect on the ferroelectric phase transition in PbTiO3 ultra-fine particles is reported, where samples with particle sizes from 20 to 200 nm were prepared by a sol-gel process followed by calcining at different temperatures.
Journal ArticleDOI
Microscopic model of ferroelectricity in stress-free PbTiO3 ultrathin films
Philippe Ghosez,Karin M. Rabe +1 more
TL;DR: In this paper, the ground-state polarization of PbTiO3 thin films was studied using a microscopic effective Hamiltonian with parameters obtained from first-principles calculations.
Related Papers (5)
Thickness dependence of ferroelectric domains in thin crystalline films
Feng Tsai,J. M. Cowley +1 more