Personne

Alexander Tagantsev

Publications associées (205)

Short- and long-range polar order contributions to the Ferroelectric phase of Ca2+ doped SrTiO3

Short- and long-range impurity-induced polar ordering in Sr1-xCaxTiO3 (x = 0.014) single crystals was investigated and discussed on the basis of light refraction, morphic birefringence and temperature-dependent dielectric hysteresis loop measurements. Anew ...

Iop Publishing Ltd2016

Velocity Control of 180 degrees Domain Walls in Ferroelectric Thin Films by Electrode Modification

Nava Setter, Alexander Tagantsev, Tomas Sluka, Petr Yudin, Ludwig Feigl

The velocity of individual 1800 domain walls in thin ferroelectric films of PbZr0.1Ti0.9O3 is strongly dependent on the thickness of the top Pt electrode made by electron-beam induced deposition (EBID). We show that when the thickness is varied in the rang ...

Amer Chemical Soc2016

Contribution of spontaneous polarization and its fluctuations to refraction of light in ferroelectrics

Alexander Tagantsev

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/Springer2016

Free-Carrier-Compensated Charged Domain Walls Produced with Super-Bandgap Illumination in Insulating Ferroelectrics

Nava Setter, Alexander Tagantsev, Dragan Damjanovic, Tomas Sluka, Petr Bednyakov

Charged domain walls in ferroelectrics are movable and electronically conducting interfaces inside insulating materials. A simple and reliable method for their artificial production with ultraviolet (UV) light is described. The UV illumination produces fre ...

Wiley-Blackwell2016

Structure 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 Soc2016

Strong surface effect on direct bulk flexoelectric response in solids

Alexander Tagantsev

In the framework of a continuum theory, it is shown that the direct bulk flexoelectric response of a finite sample essentially depends on the surface polarization energy, even in the thermodynamic limit where the body size tends to infinity. It is found th ...

Amer Inst Physics2016

Thick domain walls in non-magnetic ferroics

Alexander Tagantsev, Petr Yudin, Konstantin Shapovalov

Recent developments in the physics of non-magnetic ferroics identified possible functionality of domain walls in these materials, which specifies the current interest to the internal structure of the walls. In this context, the wall thickness itself can be ...

Taylor & Francis Ltd2016

Effective-surface-energy approach for size effects in ferroics

Nava Setter, Alexander Tagantsev, Jin Wang

We present a simple approach enabling analytical treatments of size effects in ferroelectric samples of complicated shapes for the cases where long-range depolarizing effects are not involved. The key element of the approach is the presentation of the ener ...

American Physical Society2015

Moving antiphase boundaries using an external electric field

Nava Setter, Alexander Tagantsev, Petr Yudin, Konstantin Shapovalov, Kaushik Vaideeswaran

Antiphase boundaries (APBs) are unique domain walls that may demonstrate switchable polarization in otherwise non-ferroelectric materials such as SrTiO3 and PbZrO3. The current study explores the possibility of displacing such domain walls at the nanoscale ...

Amer Inst Physics2015

Controlling domain wall motion in ferroelectric thin films

Nava Setter, Alexander Tagantsev, Petr Yudin, Ludwig Feigl

Domain walls in ferroic materials have attracted significant interest in recent years, in particular because of the unique properties that can be found in their vicinity(1-3). However, to fully harness their potential as nanoscale functional entities(4,5), ...

Nature Publishing Group2015

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