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  • 1
    Electronic Resource
    Electronic Resource
    Fatigue of Pb(Zr0.53Ti0.47)O3 ferroelectric thin films (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 7789-7798 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Fatigue of Pb(Zr0.53Ti0.47)O3 ferroelectric thin films has been studied with several novel electrode modifications. Doped amorphous silicon is used as a gating layer between the ferroelectric and metal electrode to regulate the type of charge carrier injection during switching of the ferroelectric. This configuration requires a low switching frequency in order to avoid the relaxation effect that arises from the limited charging ability of the semiconductor. In addition, charge depletion in the semiconductor causes a polarization asymmetry that reflects a depolarization field due to incomplete compensation of the polarization charge. Fatigue tests reveal that electron injection is a necessary condition for polarization degradation, whereas hole injection is not. Blocking interfaces by SiO2 or c-oriented Bi4Ti3O12 can also mitigate fatigue, albeit at a reduced polarization level. On the other hand, compensation of Pb loss through PbO undercoat layer has little effect on fatigue. Based on these observations, injected electrons in association with oxygen vacancies generated during cycling are proposed as the defects responsible for fatigue. These defects may impede domain switching by segregation at the electrode interface or at domain boundaries, with an enhanced kinetics because of the lower valence of the partially de-ionized entity. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.367953
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  • 2
    Electronic Resource
    Electronic Resource
    Model experiments on fatigue of Pb(Zr0.53Ti0.47)O3 ferroelectric thin films (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 1923-1925 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: With an n-type or p-type semiconductor as a top electrode in contact with ferroelectric Pb(Zr0.53Ti0.47)O3 thin film, polarization fatigue has been studied to investigate the effect of charge carrier injection. Electron injection is shown to be correlated with fatigue while hole injection is not. Current blocking by an insulating SiO2 layer prevents fatigue as well. The enhanced mobility of oxygen vacancies, partially de-ionized by association with the injected electrons, is proposed to be the mechanism for the electron effect.© 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.121228
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  • 3
    Electronic Resource
    Electronic Resource
    Ferroelectric Thin Films of Bismuth-Containing Layered Perovskites: Part I, Bi4Ti3O12 (1998)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 81 (1998), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Ferroelectric thin films of bismuth-containing layered perovskite Bi4Ti3O12 have been fabricated by a metalorganic decomposition (MOD) method. Crack-free and crystalline films of ∼5000 Å thickness have been deposited on Pt/Ti/SiO2/Si substrates. Different heat treatments have been studied to investigate the nucleation and growth of perovskite Bi4Ti3O12 crystallites. If the same composition and final annealing temperature are used, films with different orientations are obtained by different heating schedules. These films show a large anisotropy in ferroelectric properties. Theoretical considerations are presented to suggest that nucleation control is responsible for texture and grain-size evolution. Moreover, the origin of the ferroelectric anisotropy is rooted in the two-dimensional nature of layered polarization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1998.tb02764.x
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  • 4
    Electronic Resource
    Electronic Resource
    Ferroelectric Thin Films of Bismuth-Containing Layered Perovskites: Part II, PbBi2Nb2O9 (1998)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 81 (1998), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Ferroelectric thin films of bismuth-containing layered perovskite PbBi2Nb2O9 have been prepared by a metalorganic decomposition (MOD) method. Random and highly c-oriented films of the same starting composition have been obtained under different intermediate- and high-temperature heat treatments. A comparison of their crystallization and properties with those of Bi4Ti3O12 films reveals similar trends that are common to bismuth-containing Aurivillius compounds. Heterogeneous nucleation of the perovskite phase either on the pyrochlore (444) plane because of lattice matching or on the substrate surface because of lower interfacial energy is proposed as the cause of orientation selection during crystallization. The different thickness of the pseudoperovskite subunits in these layered compounds may be responsible for the systematic difference in the anisotropic ferroelectric properties. Smaller polarization and higher coercive field are expected for PbBi2Nb2O9, which has thinner pseudoperovskite units than Bi4Ti3O12.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1998.tb02765.x
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  • 5
    Electronic Resource
    Electronic Resource
    Ferroelectric Thin Films of Bismuth-Containing Layered Perovskites: Part III, SrBi2Nb2O9 and c-Oriented Bi4Ti3O12 Template (1998)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 81 (1998), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Randomly and c-oriented SrBi2Nb2O9 thin films have been obtained by a metalorganic decomposition (MOD) method using a highly c-oriented Bi4Ti3O12 layer as a template. This templating procedure is generally applicable to other layered perovskites, and it has the advantage of lowering the temperature for crystallization and texture selection for these thin films. Moreover, the c-oriented Bi4Ti3O12 template can serve as a bottom electrode at the same time. Ferroelectric and dielectric properties measured for SrBi2Nb2O9 films of different orientations reveal strong anisotropy following the general trend known for other layered perovskites. Systematic differences in polarization and coercive field can be consistently explained in terms of the different m values and the lack of lone-pair electrons. The latter contribute to a higher polarization and a higher coercive field for SrBi2Nb2O9 thin films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1998.tb02766.x
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  • 6
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    Fatigue of Pb(Zr0.53Ti0.47)O3 ferroelectric thin films (1998)
    American Institute of Physics
    Details
    Publication Date: 1998-06-15
    Print ISSN: 0021-8979
    Electronic ISSN: 1089-7550
    Topics: Physics
    Published by American Institute of Physics
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  • 7
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    A case study on statistical wireline log parameters in identifying shallow-water delta microfacies of Late Dongying Formation, northern Liaozhong Depression, Bohai Bay Basin (2019)
    Springer
    Details
    Publication Date: 2019-05-26
    Print ISSN: 1866-7511
    Electronic ISSN: 1866-7538
    Topics: Geosciences
    Published by Springer
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  • 8
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    Quantitative reconstruction of source-to-sink systems of the first and second members of the Shahejie Formation of the Eastern Shijiutuo uplift, Bohai Bay Basin, China (2017)
    Society of Exploration Geophysicists
    Details
    Publication Date: 2017-11-30
    Description: By examining the seismic data, logging data, core description, thin sections, rare earth elements, heavy minerals, and detrital zircon U-Pb dating, we studied the sedimentary features and provenance implications of the five fan deltas (fan deltas A-E) spread along the 428 Uplift in Bohai Bay Basin during the deposition of the first and second members of the Shahejie Formation ([Formula: see text]). The glutenite volumes of the fan deltas and the erosion volumes of their catchments were calculated as well as the sand-production rates. The results indicated that during the sedimentation of the first and second members of the Shahejie Formation ([Formula: see text]): (1) the true lithology of the 428 Uplift, which was completely eroded, could not be represented by the residual lithology (Mesozoic igneous rocks with interlayers of clastic rocks on the western subuplift and Permian sedimentary rocks on the eastern subuplift), (2) fan deltas A and B were dominated by Mesozoic igneous rocks from the eastern low uplift, whereas the fan deltas C-E were dominated by sedimentary rocks with interlayers of igneous rocks from the western low uplift, and (3) during [Formula: see text], the volumes of the glutenites of the five fan deltas were [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text], respectively, whereas the erosion volumes of the catchments are [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] respectively. (4) The sand production rates of the five fan deltas were 71.9%, 53.8%, 34.7%, 29.6%, and 29%, respectively. (5) Approximately 53.8%–71.9% of the eroded igneous rocks formed the near-source fan-delta glutenites, whereas only 29.0%–34.7% of the eroded sedimentary rocks with igneous rock interlayers formed the near-source fan-delta glutenites. The igneous parent rocks featured higher sand production rates and were responsible for the development of the most sand-rich reservoirs. Based on the research finding, it is possible to predict the development of the sandstone reservoirs at the poorly explored steep slope areas.
    Print ISSN: 2324-8858
    Electronic ISSN: 2324-8866
    Topics: Geosciences
    Published by Society of Exploration Geophysicists
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  • 9
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    Source to sink studies between the Shaleitian uplift and surrounding sags: Perspectives on the importance of hinterland relief and catchment area for sediment budget, Western Bohai Bay Basin, China (2017)
    Society of Exploration Geophysicists
    Details
    Publication Date: 2017-11-30
    Description: Source-to-sink system analysis, a cutting-edge topic in the field of earth science, encompasses the whole system, from erosion and transportation to sediment accumulation on the earth’s surface, and involves multidisciplinary collaboration. This current analysis, based on high-precision 3D seismic data, well logs, and other drilling data, using quantitative characterization of the source-to-sink elements, documents that Archean-Proterozoic migmatitic granite, Cambrian-Ordovician carbonate and clastic rocks, and Mesozoic volcaniclastic rocks are developed in the Shaleitian uplift from south to north across large relief differences (up to 2300 m). The relief and size of the catchment in the source area were calculated by denudation recovery, time-depth conversion and high-resolution interpretation on seismic data. Three types of sediment-transporting channel system and 20 catchment areas ([Formula: see text]) were documented around the edges of the uplift: paleovalley channels, fault-controlled channels, and fault-transfer channels. The Paleogene sink is dominated by near-source coarse-grained depositional systems, with the lithofacies characteristics of low lake level (sand rich), lake transgressive (mud rich), and uplift period (sand rich). Three types of boundary conditions developed in the region of the Shaleitian uplift: fault-related steep-slopes (single or multiple), fault ramps, and slope patterns. The bedrock composition, catchment area, channel systems, and fault-border patterns in the Shaleitian uplift jointly controlled the types and scales of sedimentary sandbodies. The south Shaleitian tectonic zone functioned as a high-efficiency coupling system in which reservoir sandbodies were developed (extensive length distance, with well-sorted and round-grained sediments, but weak physical properties). The coupling system for the southwest and west Shaleitian tectonic zones is subordinate (near source and sand rich, sand and mud interbedded, and weak physical properties). The coupling system of the northeast Shaleitian tectonic zone is lowest in efficiency (relatively mud rich).
    Print ISSN: 2324-8858
    Electronic ISSN: 2324-8866
    Topics: Geosciences
    Published by Society of Exploration Geophysicists
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  • 10
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    Source-to-sink system and its sedimentary records in the continental rift basins: An example from the Paleogene in the Bohai Sea Area, China (2017)
    Society of Exploration Geophysicists
    Details
    Publication Date: 2017-11-30
    Description: The “source-to-sink” concept originated in the study of global change and atmospheric pollution. In recent years, the concept of a source-to-sink system has been widely applied in continental margin sedimentary analysis. In our research, the idea of source-to-sink is applied to the continental rift basin sedimentary system in the Bohai Sea area. The idea emphasizes that the sedimentation dynamics, including erosion, transportation, and accumulation, are considered as a complete source-to-sink system. The sand-rich region often corresponds to a source-to-sink coupling system in a complex continental rift basin, which includes the effective provenance, high-efficiency routing system, and base-level transition. In addition, (1) the effective provenance can be subdivided into explicit and implicit provenance systems in which the implicit provenance system has been shown to be a significant advancement in reservoir prediction for the Bohai Sea area, (2) the sediment-transport pathways and slope-break zone constitute the routing systems, and (3) the base-level transition is one of the allogenic factors that controls the position of the sandstone distribution in a sequence. Based on a large number of previous studies and different characteristics of sequence-stratigraphic models in the Bohai Sea area, we have evaluated three types of source-to-sink systems, including the fault-steep slope, strike-slip fault slope, and gentle slope pattern. In addition, the fault-steep-slope source-to-sink coupling system can be further subdivided into four types, namely, the corner, relay ramps, fault-throw diminishment-type, and valley-type source-to-sink systems. The source-to-sink system of the gentle slope pattern includes the uplift axis valley-type source-to-sink system and the slope-valley-type source-to-sink system. A small-scale, thick layer of fan delta is formed in the fault-steep-slope zone. A continuous braided river delta is formed in the strike-slip fault slope zone. A large-scale, thin layer of braided river delta is formed in the gentle slope zone. The characteristics of source-to-sink systems in continental rift basins are established for the exploration or prediction of favorable zones in the study area, as well as in similar basins.
    Print ISSN: 2324-8858
    Electronic ISSN: 2324-8866
    Topics: Geosciences
    Published by Society of Exploration Geophysicists
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