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Ferroelectric Domain Walls - Statics, Dynamics, and Functionalities Revealed by Atomic Force Microscopy (Paperback, Softcover reprint of the original 1st ed. 2014)
Loot Price: R3,242
Discovery Miles 32 420
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Ferroelectric Domain Walls - Statics, Dynamics, and Functionalities Revealed by Atomic Force Microscopy (Paperback, Softcover reprint of the original 1st ed. 2014)
Series: Springer Theses
Expected to ship within 10 - 15 working days
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Using the nano metric resolution of atomic force microscopy
techniques, this work explores the rich fundamental physics and
novel functionalities of domain walls in ferroelectric materials,
the nano scale interfaces separating regions of differently
oriented spontaneous polarization. Due to the local
symmetry-breaking caused by the change in polarization, domain
walls are found to possess an unexpected lateral piezoelectric
response, even when this is symmetry-forbidden in the parent
material. This has interesting potential applications in
electromechanical devices based on ferroelectric domain patterning.
Moreover, electrical conduction is shown to arise at domain walls
in otherwise insulating lead zirconate titanate, the first such
observation outside of multiferroic bismuth ferrite, due to the
tendency of the walls to localize defects. The role of defects is
then explored in the theoretical framework of disordered elastic
interfaces possessing a characteristic roughness scaling and
complex dynamic response. It is shown that the heterogeneous
disorder landscape in ferroelectric thin films leads to a breakdown
of the usual self-affine roughness, possibly related to strong
pinning at individual defects. Finally, the roles of varying
environmental conditions and defect densities in domain switching
are explored and shown to be adequately modelled as a competition
between screening effects and pinning.
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