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Direct observation of region by region suppression of the switchable polarization (fatigue) in Pb(Zr,Ti)O-3 thin film capacitors with Pt electrodes

Publications associées (48)

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Internal optical forces in plasmonic nanostructures

Olivier Martin, Raziman Thottungal Valapu

We present a computational study of the internal optical forces arising in plasmonic gap antennas, dolmen structures and split rings. We find that very strong internal forces perpendicular to the propagation direction appear in these systems. These interna ...

Optical Soc Amer2015

Internal optical forces in plasmonic nanostructures

Olivier Martin

Optical Society of America2015

On the anisotropy of stress-distribution induced in glasses and crystals by non-ablative femtosecond laser exposure

Yves Bellouard

Femtosecond laser exposure in the non-ablative regime induces a variety of bulk structural modifications, in which anisotropy may depend on the polarization of the writing beam. In this work, we investigate the correlation between polarization state and st ...

Optical Society of America2015

Closed-circuit domain quadruplets in BaTiO3 nanorods embedded in a SrTiO3 film

Nava Setter

Cylindrical BaTiO3 nanorods embedded in < 100 >-oriented SrTiO3 epitaxial film in a brushlike configuration are investigated in the framework of the Ginzburg-Landau-Devonshire model. It is shown that strain compatibility at BaTiO3/SrTiO3 interfaces keeps B ...

Amer Physical Soc2014

Compliant ferroelastic domains in epitaxial Pb(Zr, Ti)O-3 thin films

Nava Setter, Silviu Cosmin Sandu, Ludwig Feigl

Ordered patterns of highly compliant ferroelastic domains have been created by use of tensile strained epitaxial Pb(Zr, Ti)O-3 thin films, of very low defect density, grown on DyScO3 substrates. The effect of 180 degrees switching on well-ordered a/c 90 de ...

Amer Inst Physics2014

Multiferroicity in the geometrically frustrated FeTe2O5Cl

Helmuth Berger

The layered FeTe2O5Cl compound was studied by specific-heat, muon-spin relaxation, nuclear magnetic resonance, and dielectric as well as neutron and synchrotron x-ray diffraction measurements, and the results were compared to isostructural FeTe2O5Br. We fi ...

Amer Physical Soc2013

Domain wall conduction in bismuth ferrite thin films

Monika Iwanowska

Ferroelectrics are materials with a spontaneous electrical polarization, which can be switched by an applied electric field between two or more stable orientations permitted by symmetry. The regions where the ferroelectric material is polarized in one dire ...

EPFL2013

Bichiral structure of ferroelectric domain walls driven by flexoelectricity

Nava Setter, Alexander Tagantsev, Petr Yudin

The influence of flexoelectric coupling on the internal structure of neutral domain walls in the tetragonal phase of perovskite ferroelectrics is studied. The effect is shown to lower the symmetry of 180 degrees walls which are oblique with respect to the ...

American Physical Society2012

Macroscopic Theory of Charged Domain Walls in Ferroelectrics

Maxim Gureev

This thesis consists of a theoretical analysis of charged domain walls in ferroelectrics based on Landau theory and the theory of semiconductors. First, the internal structure of a 180-degree charged domain wall is considered. It is shown that different re ...

EPFL2012

Magnetoelectric effects in single crystals of the cubic ferrimagnetic helimagnet Cu2OSeO3

Jean-Philippe Ansermet, Helmuth Berger

We present magnetodielectric measurements in single crystals of the cubic spin-1/2 compound Cu2OSeO3. A magnetic-field-induced electric polarization (P) and a finite magnetocapacitance (MC) is observed at the onset of the magnetically ordered state (T-c = ...

2012