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http://dx.doi.org/10.12925/jkocs.2018.35.4.1206

Frequency Characteristics of Coercive Field in Ferroelectric Poly(Vinylidene Fluoride-Trifluoroethylene) Thin Film  

Zhang, Ting (Department of Electronic Engineering, Jeju National University)
Rahman, Sheik Abdur (Department of Electronic Engineering, Jeju National University)
Khan, Shenawar Ali (Department of Electronic Engineering, Jeju National University)
Lee, Kwang-Man (Department of Electronic Engineering, Jeju National University)
Kim, Woo Young (Department of Electronic Engineering, Jeju National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.35, no.4, 2018 , pp. 1206-1212 More about this Journal
Abstract
In this study, the polarization reversal characteristics of thin film capacitors with a thickness of 100 nm or less fabricated with ferroelectric polymer were measured and analyzed. For the fixed film thickness, polarization reversal occurred at higher coercive fields as the applied maximum electric field increased. For the fixed maximum electric field, polarization reversal occurred at the same coercive field irrespective of the thickness of the thin film. The proportional constant values between the logarithmic electric field and the logarithmic scale frequency were $0.12{\pm}0.01$ for all measurements. As a result, the ferroelectric polymer capacitors consistently exhibited polarization reversal characteristics without any size effects up to a thickness of 40 nm. This study shows the possibility of a polymer memory device that can operate at low voltage, which is useful for predicting the behavior of a low-voltage operating polymer memory device.
Keywords
Ferroelectric Polymer; P(VDF-TrFE); Coercive Field; Switching; Frequency;
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