Polarization switching using single-walled carbon nanotubes grown on epitaxial ferroelectric thin films

摘要

We have directly grown single-walled carbon nanotubes on epitaxial BaTiO_3 thin films, fabricating prototype carbon nanotube-ferroelectric devices. We demonstrate polarization switching using the nanotube as a local electric field source and compare the results to switching with an atomic force microscopy tip. The observed variation of domain growth rates in the two cases agrees with the changes in electric field intensity at the ferroelectric surface.