Local probing of relaxation time distributions in ferroelectric polymer nanomesas: Time-resolved piezoresponse force spectroscopy and spectroscopic imaging
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|Title:||Local probing of relaxation time distributions in ferroelectric polymer nanomesas: Time-resolved piezoresponse force spectroscopy and spectroscopic imaging||Authors:||Rodriguez, Brian J.
|Permanent link:||http://hdl.handle.net/10197/5201||Date:||11-Jun-2008||Abstract:||Time-resolved piezoresponse force spectroscopy (TR-PFS) and spectroscopic imaging are developed to probe the spatial variability of relaxation behavior in nanoscale ferroelectric materials and structures. TR-PFS was applied to study polarization dynamics in polyvinylidine fluoride and trifluoroethylene nanomesas. We demonstrate that polarization relaxation in ferroelectric polymers is slow even on the similar to 10 nm length scale of piezoresponse force microscopy (PFM) signal generation. Furthermore, the relaxation times are found to be nonuniform within the nanomesa, indicative of a complex internal structure. The applicability of TR-PFM for studies of polarization dynamics in ferroelectric polymers and relaxors is discussed. (C) 2008 American Institute of Physics.||Type of material:||Journal Article||Publisher:||American Institute of Physics||Copyright (published version):||2008 American Institute of Physics||Keywords:||Spectroscopic imaging||DOI:||10.1063/1.2942390||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Physics Research Collection|
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