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Title: Decoupling indirect topographic cross-talk in band excitation piezoresponse force microscopy imaging and spectroscopy

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4954276· OSTI ID:1259425
 [1];  [2];  [3];  [3];  [4];  [1];  [2];  [2];  [2];  [2]
  1. Univ. de Lyon (France)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Innovations for High Performance Microelectronics (IHP), Frankfurt (Germany)
  4. Univ. de Toulouse, Toulouse (France)

Here, all scanning probe microscopies are subjected to topographic cross-talk, meaning the topography-related contrast in functional images. Here, we investigate the signatures of indirect topographic cross-talk in piezoresponse force microscopy (PFM) imaging and spectroscopy and its decoupling using band excitation (BE) method in ferroelectric BaTiO3 deposited on the Si substrates with free standing nanopillars of diameter 50 nm. Comparison between the single-frequency PFM and BE-PFM results shows that the measured signal can be significantly distorted by topography-induced shifts in the contact resonance frequency and cantilever transfer function. However, with proper correction, such shifts do not affect PFM imaging and hysteresis loop measurements. This suggests the necessity of an advanced approach, such as BE-PFM, for detection of intrinsic sample piezoresponse on the topographically non-uniform surfaces.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1259425
Journal Information:
Applied Physics Letters, Vol. 108, Issue 25; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Cited By (4)

Exploring Anomalous Polarization Dynamics in Organometallic Halide Perovskites journal January 2018
Piezoresponse force and electrochemical strain microscopy in dual AC resonance tracking mode: Analysis of tracking errors journal January 2018
Towards nanoscale electrical measurements in liquid by advanced KPFM techniques: a review journal July 2018
Investigations of ferroelectric polycrystalline bulks and thick films using piezoresponse force microscopy journal March 2019