Local Domain Wall Structure in Polycrystalline BiFeO3

Enhanced photovoltaic properties in graphene/polycrystalline BiFeO3/Pt heterojunction structure

Domain wall roughness in stripe phase BiFeO3 thin films.

Using the model system of ferroelectric domain walls, we explore the effects of long-range dipolar interactions and periodic ordering on the behavior of pinned elastic interfaces. In piezoresponse force microscopy studies of the characteristic roughening of intrinsic 71° stripe domains in BiFeO3 thin films, we find unexpectedly high values of the roughness exponent ζ=0.74±0.10, significantly di...

Reversal processes and domain wall pinning in polycrystalline Co-nanowires

The magnetization reversal process of single Co nanowires is investigated experimentally by magnetoresistance measurements at low temperatures. The results are compared to magnetic force micrographs of the remanent domain configuration. The theoretical expectation for the reversal process is obtained from Monte Carlo simulations. We find that both the width and the thickness of the wires as wel...

Anti-Polar Ordering in Polycrystalline Samarium Doped BiFeO3

Bismuth ferrite (BiFeO3 or BFO) has recently been intensively investigated due to its ability to exhibit a rare combination of both ferroelectric and antiferromagnetic ordering at room temperature [1]. Current literature shows that several solid solutions between BFO and rare-earth (La, Nd, Sm, Gd) ferrites, exhibit morphotropic phase boundary (MPB) between a polar (rhombohedral) and non-polar ...

Defect-mediated ferroelectric domain depinning of polycrystalline BiFeO3 multiferroic thin films