Journal
Scientific Reports
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep30579
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Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2014R1A1A1008061, NRF-2014R1A4A1008474]
- National Academy of Sciences of Ukraine [35-02-15, 07-06-15]
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Hysteresis loop analysis via piezoresponse force microscopy (PFM) is typically performed to probe the existence of ferroelectricity at the nanoscale. However, such an approach is rather complex in accurately determining the pure contribution of ferroelectricity to the PFM. Here, we suggest a facile method to discriminate the ferroelectric effect from the electromechanical (EM) response through the use of frequency dependent ac amplitude sweep with combination of hysteresis loops in PFM. Our combined study through experimental and theoretical approaches verifies that this method can be used as a new tool to differentiate the ferroelectric effect from the other factors that contribute to the EM response.
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