87 citations · 188 across the 11 of their papers we have counts for
12 papers
Pressure-control of non-ferroelastic ferroelectric domains in ErMnO3
O. W. Sandvik, A. M. Müller, H. W. Ånes +7
Mechanical pressure controls the structural, electric, and magnetic order in solid state systems, allowing to tailor and improve their physical properties. A well-established examp…
Quantitative 3D mapping of chemical defects at charged grain boundaries in a ferroelectric oxide
K. A. Hunnestad, J. Schultheiß, A. C. Mathisen +4
Polar discontinuities and structural changes at oxide interfaces can give rise to a large variety of electronic and ionic phenomena. Related effects have been intensively studied i…
Ferroelectric Polycrystals: Structural and microstructural levers for property engineering via domain-wall dynamics
J. Schultheiß, G. Picht, J. Wang +4
Ferroelectrics have a spontaneous electrical polarization that is arranged into domains and can be reversed by an externally applied field. This high versatility makes them useful…
Confinement-driven inverse domain scaling in polycrystalline ErMnO3
Jan Schultheiß, Fei Xue, Erik Roede +5
The research on topological phenomena in ferroelectric materials has revolutionized the way we understand polar order. Intriguing examples are polar skyrmions, vortex/anti-vortex s…
Unveiling AC electronic properties at ferroelectric domain walls
Jan Schultheiß, Tadej Rojac, Dennis Meier
Ferroelectric domain walls exhibit a range of interesting electrical properties and are now widely recognized as functional two-dimensional systems for the development of next-gene…
Charged ferroelectric domain walls for deterministic a.c. signal control
J. Schultheiß, E. Lysne, L. Puntigam +5
The direct current (d.c.) conductivity and emergent functionalities at ferroelectric domain walls are closely linked to the local polarization charges. Depending on the charge stat…
Insulating improper ferroelectric domain walls as robust barrier layer capacitors
Lukas Puntigam, Jan Schultheiß, Ana Strinic +7
We report the dielectric properties of improper ferroelectric h-ErMnO. From the bulk characterisation we observe a temperature and frequency range with two distinct relaxation-…
Multi-step stochastic mechanism of polarization reversal in rhombohedral ferroelectrics
Yuri A. Genenko, Ruben Khachaturyan, Ivan S. Vorotiahin +4
A stochastic model for the field-driven polarization reversal in rhombohedral ferroelectrics is developed, providing a description of their temporal electromechanical response. App…
Intrinsic and extrinsic conduction contributions at nominally neutral domain walls in hexagonal manganites
J. Schultheiß, J. Schaab, D. R. Småbråten +5
Conductive and electrostatic atomic force microscopy (cAFM and EFM) are used to investigate the electric conduction at nominally neutral domain walls in hexagonal manganites. The E…
Domain wall-grain boundary interactions in polycrystalline Pb(Zr0.7Ti0.3)O3 piezoceramics
J. Schultheiß, S. Checchia, H. Uršič +5
Interactions between grain boundaries and domain walls were extensively studied in ferroelectric films and bicrystals. This knowledge, however, has not been transferred to polycrys…
Stochastic model of dispersive multi-step polarization switching in ferroelectrics due to spatial electric field distribution
Ruben Khachaturyan, Jan Schultheiss, Jurij Koruza +1
A stochastic model for polarization switching in tetragonal ferroelectric ceramics is introduced, which includes sequential 90°- and parallel 180°-switching processes and accounts…
Stochastic multi-step polarization switching in ferroelectrics
Y. A. Genenko, R. Khachaturyan, J. Schultheiss +3
Consecutive stochastic 90° polarization switching events, clearly resolved in recent experiments, are described by a new nucleation and growth multi-step model. It extends the clas…