Thermodynamic theory of the lead zirconate-titanate solid solution system

Haun, M. J.; Furman, Eugene; Zhang, Zhiqiang; Jang, S. J.

doi:10.1080/00150198908014273

Cited by 66 publications

(82 citation statements)

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“…For this simulation, coefficients measured by Haun, et al [42][43][44] were used. Electrical dipole interactions between bound polarization charges and the electric field distribution, E i , were considered through the electrostatic interaction …”

Section: Methodsmentioning

confidence: 99%

Atomic-scale mechanisms of ferroelastic domain-wall-mediated ferroelectric switching

et al. 2013

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Polarization switching in ferroelectric thin films occurs via nucleation and growth of 180°d omains through a highly inhomogeneous process in which the kinetics are largely controlled by defects, interfaces and pre-existing domain walls. Here we present the first real-time, atomic-scale observations and phase-field simulations of domain switching dominated by pre-existing, but immobile, ferroelastic domains in Pb(Zr 0.2 Ti 0.8 )O 3 thin films. Our observations reveal a novel hindering effect, which occurs via the formation of a transient layer with a thickness of several unit cells at an otherwise charged interface between a ferroelastic domain and a switched domain. This transient layer possesses a low-magnitude polarization, with a dipole glass structure, resembling the dead layer. The present study provides an atomic level explanation of the hindering of ferroelectric domain motion by ferroelastic domains. Hindering can be overcome either by applying a higher bias or by removing the as-grown ferroelastic domains in fabricated nanostructures.

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Section: Methodsmentioning

confidence: 99%

Atomic-scale mechanisms of ferroelastic domain-wall-mediated ferroelectric switching

et al. 2013

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“…Although crystalline lead titanate is well known, the properties of amorphous, undoped lead titanate have not been thoroughly investigated. Crystalline lead titanate has an intrinsic polycrystalline dielectric constant of approximately 75 17) and a leakage current of approximately 10 ¹6 A/cm 2 . 18) Amorphous lead titanate has a dielectric constant between 20 and 30.…”

Section: )3)mentioning

confidence: 99%

Amorphous-nanocrystalline lead titanate thin films for dielectric energy storage

Michael

Trolier-McKinstry

2014

J. Ceram. Soc. Japan

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Many high permittivity crystalline dielectric thin films have a low breakdown strength, which is unfavorable for dielectric energy storage devices. In contrast, many amorphous linear dielectrics have much lower permittivities but larger breakdown strengths. Here, composite thin films with nanocrystalline particles in an amorphous matrix were explored to increase the stored energy density of dielectrics. For this purpose, thin films of lead-rich lead titanate, Pb 1.1 TiO 3.1 , were fabricated via chemical solution deposition and heat-treated at temperatures¯400°C. Transmission electron microscopy indicated the presence of dense lead oxide nanocrystals in an amorphous lead titanate network. The films exhibit a relative permittivity of 32.6 and a low dielectric loss of 0.0008. The leakage current is approximately 10 ¹8 A/cm 2 , with a DC breakdown strength between 2 and 3 MV/cm. The 1 kHz breakdown strength exceeds 5 MV/cm. At an electric field of 5 MV/cm and a measurement frequency of 1 kHz, the maximum in energy storage density was ³28 J/cm 3 . These properties suggest that nanocomposite Pb 1.1 TiO 3.1 films may be a suitable candidate for integration into energy storage devices.

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“…On the one hand, since electric hysteresis in Rochelle salt was in 1920 discovered by Valasek (Valasek, 1921), there have been tremendous efforts to look through ferroelectricity in a comprehensive way over the past many decades. As a consequence, the phenomenological theory of ferroelectricity has been presented by many researchers: Devonshire (Devonshire, 1949;Devonshire, 1951); Jona and Shirane (Jona and Shirane, 1962); Fatuzzo and Merz (Fatuzzo and Merz, 1959); Line and Glass (Line and Glass, 1979); and Haun (Haun, 1988). The series of their works have been successful to express the internal energy of a ferroelectric crystal system.…”

Section: Introductionmentioning

confidence: 99%

Future Memory Technology and Ferroelectric Memory as an Ultimate Memory Solution

Kim¹,

Jung²

2011

Ferroelectrics - Applications

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Thermodynamic theory of the lead zirconate-titanate solid solution system

Cited by 66 publications

References 0 publications

Atomic-scale mechanisms of ferroelastic domain-wall-mediated ferroelectric switching

Atomic-scale mechanisms of ferroelastic domain-wall-mediated ferroelectric switching

Amorphous-nanocrystalline lead titanate thin films for dielectric energy storage

Future Memory Technology and Ferroelectric Memory as an Ultimate Memory Solution

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