Publication
Room-temperature ferroelectricity in strained SrTiO3
Related publications (81)
The variation of PbTiO3 bandgap at ferroelectric phase transition
Optical properties of the PbTiO3 thin films fabricated by chemical solution deposition have been measured with variable angle spectroscopic ellipsometry in the spectral range of 1-6 eV and in the temperature interval from room temperature to 950 K. The opt ...
Iop Publishing Ltd2016Structure and pressure-induced ferroelectric phase transition in antiphase domain boundaries of strontium titanate from first principles
Nava Setter, Alexander Tagantsev, Alexander Kvasov
In this work, using zero kelvin ab initio calculations, we revisit the structure and ferroelectric phase transition in antiphase domain boundaries (APBs) in SrTiO3 (STO), which has been previously addressed in terms of a phenomenological approach. We confi ...
Amer Physical Soc2016Internal electrical and strain fields influence on the electrical tunability of epitaxial Ba0.7Sr0.3TiO3 thin films
Nava Setter, Sarunas Bagdzevicius, Silviu Cosmin Sandu, Barbara Maraston Fraygola
Perpetual demand for higher transfer speed and ever increasing miniaturization of radio and microwave telecommunication devices demands new materials with high electrical tunability. We have investigated built in electrical and strain fields' influence on ...
Amer Inst Physics2016What is a ferroelectric-a materials designer perspective
Ferroelectrics are usually defined as polar materials that display polarisation hysteresis. This is a functional definition. A structural definition exists too, based solely on symmetry arguments. The structural definition, useful e.g. for design of new ma ...
Taylor & Francis Ltd2016Contribution of spontaneous polarization and its fluctuations to refraction of light in ferroelectrics
The expressions for the spontaneous polar contribution delta n (i) (s) to the principal values of the refractive index due to the quadratic electro-optic effect in ferroelectrics have been considered within the phenomenological approach taking into account ...
Maik Nauka/Interperiodica/Springer2016Critical scattering of synchrotron radiation in lead zirconate-titanate with low titanium concentrations
Diffuse scattering in the lead zirconate-titanate single crystal with a titanium concentration of 0.7 at % has been studied by the synchrotron radiation scattering method. Measurements have been performed both in the vicinity of the Brillouin zone center a ...
Maik Nauka/Interperiodica/Springer2015Formation of charged ferroelectric domain walls with controlled periodicity
Nava Setter, Alexander Tagantsev, Dragan Damjanovic, Tomas Sluka, Petr Bednyakov
Charged domain walls in proper ferroelectrics were shown recently to possess metallic-like conductivity. Unlike conventional heterointerfaces, these walls can be displaced inside a dielectric by an electric field, which is of interest for future electronic ...
Nature Publishing Group2015Phase transitions associated with competing order parameters in compressively strained SrTiO3 thin films
Alexander Tagantsev, Harry Joseph Trodahl
(100)-epitaxial SrTiO3 thin films having biaxial compressive strains up to -1.60% were grown on lattice mismatched substrates. Two phase transitions induced by the coupled instabilities (antiferrodistortive and ferroelectric) in SrTiO3 were revealed in a c ...
Amer Physical Soc2015Breaking of macroscopic centric symmetry in paraelectric phases of ferroelectric materials and implications for flexoelectricity
Dragan Damjanovic, Alberto Biancoli
A centrosymmetric stress cannot induce a polar response in centric materials; piezoelectricity is, for example, possible only in non-centrosymmetric structures. An exception is meta-materials with shape asymmetry, which may be polarized by stress even when ...
Nature Publishing Group2015Effect of Magnetic Ion Doping on Structural, Electric and Relaxor Properties of Pb (Fe2/3W1/3) O-3 Multiferroic Ceramics
Single-phase Pb(Fe2/3W1/3)O3 (PFW) multiferroic ceramics doped with magnetic ions were fabricated using a modified B-site precursor method. Dielectric response was investigated over a wide range of temperature and frequency. Doping did not modify the chara ...
Univ Fed Sao Carlos, Dept Engenharia Materials2014