Journal
PHYSICAL REVIEW B
Volume 72, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.72.214118
Keywords
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Ferroelectric nanodots and infinite wires of Pb(Zr0.4Ti0.6)O-3 alloy under different boundary conditions are investigated via Monte Carlo simulations using an atomistic first-principles-based effective Hamiltonian. These nanosystems all exhibit a spontaneous polarization that points along a nonperiodic direction, for situations close to short-circuit electrical boundary conditions and independently of the epitaxial strain. On the other hand, unusual dipole patterns arise in these systems when they are under open-like circuit conditions. The dependency of these patterns on the nanostructure's dimensionality and strain is further revealed and explained.
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