Leakage behavior and distortion of the hysteresis loop in ferroelectric thin films

Zheng, Lirong; Lin, Chenglu; Xu, Huacheng; Zou, Songbing; Okuyama, Masanori

doi:10.1007/bf02916944

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…The average resistivity values calculated from repeated experiments are provided in figure 5(b). The complete relationship of leakage current to applied electric field is a combination of a linear regime at intermediate electric fields and nonlinear regimes at low and high electric fields [35]. The resistivity is exponentially decreasing with increased temperature, in agreement with previously reported results [36].…”

Section: Leakage Current Measurementsupporting

confidence: 91%

Phase transformation based pyroelectric waste heat energy harvesting with improved practicality

Lynch

2016

Smart Mater. Struct.

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In 2014, almost 60% of thermal energy produced in the United States was lost to the environment as waste heat. Ferroelectric based pyroelectric devices can be used to convert some of this waste heat into usable electrical energy using the Olsen cycle, an ideal thermodynamic cycle, but there are a number of barriers to its realization in a practical device. This study uses the Olsen cycle to benchmark a less efficient thermodynamic cycle that is more easily implemented in devices. The ferroelectric pyroelectric material used was (Pb 0.97 La 0.02 )(Zr 0.55 Sn 0.32 Ti 0.13 )O 3 ceramic, a ferroelectric material that undergoes a temperature driven phase transformation. A net energy density of 0.27 J cm −3 per cycle was obtained from the ferroelectric material using the modified cycle with a temperature change between 25°C and 180°C. This is 15.5% of the Olsen cycle result with the same temperature range and 1-8 MV m −1 applied electric field range. The power density was estimated to 13.5 mW cm −3 with given experimental conditions. A model is presented that quantitatively describes the effect of several parameters on output energy density and can be used to design ferroelectric based pyroelectric energy converters. The model indicates that optimization of material geometry and heating conditions can increase the output power by an order or magnitude.

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Section: Leakage Current Measurementsupporting

confidence: 91%

Phase transformation based pyroelectric waste heat energy harvesting with improved practicality

Lynch

2016

Smart Mater. Struct.

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“…Non-symmetric P(E) hysteresis loops observed on both bulk ceramics and thin films are generally attributed to internal fields caused by spacecharge accumulation and to the influence of the film-substrate interface and to grain boundary phenomena [36,37]. Although the non-linearity P(E) features demonstrated ferroelectric properties of these thin films, due to the resistive leakage, it is impossible to appreciate their macroscopic switching performances.…”

Section: Resultsmentioning

confidence: 97%

Preparation and characterisation of PZT films by RF-magnetron sputtering

Frunza

Ricinschi

Gheorghiu

et al. 2011

Journal of Alloys and Compounds

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“…Figure 4 shows the leakage current density versus electric field (𝐽 − 𝐸) characteristics of the Au/BSFO/LNO film capacitors measured at RT. 𝐽 − 𝐸 curves of all the films at negative and positive biases are asymmetric, according to the report of Clark et al [21] and Zheng et al; [22] this may originate from the different work functions of Au and LNO electrodes. As shown in the figures, the leakage current density of the films first increases with 𝑥 increasing to 0.03, and then it decreases with 𝑥 increasing to 0.10.…”

mentioning

confidence: 59%

Effects of Substitution of Sm for Bi in BiFeO ₃ Thin Films Prepared by the Sol-Gel Method

Ning-Xiang¹,

Zhao²,

Jia-Yang³

et al. 2010

Chinese Phys. Lett.

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Bi1−𝑥Sm𝑥FeO3 films with 𝑥 = 0, 0.03, 0.05, 0.07 and 0.10 are prepared on LaNiO3/Si(100) substrates by the sol-gel method. X-ray diffraction patterns reveal that pure phase films with random orientations are fabricated. The results of SEM indicate that films with denser surfaces are obtained by Sm substitution. At the doping level of 𝑥 = 0.05, remnant polarization 𝑃𝑟 increases to 3.19 𝜇C/cm 2 from 1.12 𝜇C/cm 2 of the un-substituted BiFeO3 film and shows enhanced ferroelectricity at room temperature. Because of the low leakage current density in the high electric field region, a polarization hysteresis loop with remanent polarization of 5.15 𝜇C/cm 2 is observed in the 0.10 Sm-substituted BiFeO3 films at the applied electric field of 226 kV/cm. Through the substitution of Sm, the leakage current density is reduced for the films with 𝑥 = 0.07-0.10.

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Leakage behavior and distortion of the hysteresis loop in ferroelectric thin films

Cited by 7 publications

References 14 publications

Phase transformation based pyroelectric waste heat energy harvesting with improved practicality

Phase transformation based pyroelectric waste heat energy harvesting with improved practicality

Preparation and characterisation of PZT films by RF-magnetron sputtering

Effects of Substitution of Sm for Bi in BiFeO ₃ Thin Films Prepared by the Sol-Gel Method

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Leakage behavior and distortion of the hysteresis loop in ferroelectric thin films

Cited by 7 publications

References 14 publications

Phase transformation based pyroelectric waste heat energy harvesting with improved practicality

Phase transformation based pyroelectric waste heat energy harvesting with improved practicality

Preparation and characterisation of PZT films by RF-magnetron sputtering

Effects of Substitution of Sm for Bi in BiFeO 3 Thin Films Prepared by the Sol-Gel Method

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Effects of Substitution of Sm for Bi in BiFeO ₃ Thin Films Prepared by the Sol-Gel Method