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Investigations of Ferroelectric Polarization Switching in Potassium Nitrate Composite Films
Kumar, Neeraj,Nath, Rabinder The Korean Institute of Electrical and Electronic 2014 Transactions on Electrical and Electronic Material Vol.15 No.2
This article explains the experimental results of ferroelectric polarization switching (FPS) of potassium nitrate ($KNO_3$) with different polymers such as polyvinylidene fluoride (PVDF) and polyvinyl fluoride (PVF) using simple melt-press techniques. To analyze the ferroelectric polarization switching in potassium nitrate ($KNO_3$) composite films at room temperature, we applied the Ishibashi and Takagi theory (based on Avrami model) to the switching current transient. To investigate the dimensionality of domain growth, the ferroelectric polarization switching current (FPS current) was observed from the square - wave bipolar signals across a resistance of $0.1k{\Omega}$ in series with the composite films. The existence of a switching current transient pulse confirmed the ferroelectricity and indicated the stability of the ferroelectric phase (phase III) of $KNO_3$ at room temperature. Polarization hysteresis (P-E) characteristics supported the prominent features of ferroelectric polarization switching in the composite films at room temperature.
Investigations of Ferroelectric Polarization Switching in Potassium Nitrate Composite Films
Neeraj Kumar,Rabinder Nath 한국전기전자재료학회 2014 Transactions on Electrical and Electronic Material Vol.15 No.2
This article explains the experimental results of ferroelectric polarization switching (FPS) of potassium nitrate (KNO3)with different polymers such as polyvinylidene fluoride (PVDF) and polyvinyl fluoride (PVF) using simple melt-presstechniques. To analyze the ferroelectric polarization switching in potassium nitrate (KNO3) composite films at roomtemperature, we applied the Ishibashi and Takagi theory (based on Avrami model) to the switching current transient. To investigate the dimensionality of domain growth, the ferroelectric polarization switching current (FPS current)was observed from the square - wave bipolar signals across a resistance of 0.1 kΩ in series with the composite films. The existence of a switching current transient pulse confirmed the ferroelectricity and indicated the stability of theferroelectric phase (phase III) of KNO3 at room temperature. Polarization hysteresis (P-E) characteristics supportedthe prominent features of ferroelectric polarization switching in the composite films at room temperature.