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Showing 1 to 20 of 321 for “"Ferroelectric"”.
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Nanostructured ferroelectric materials
… future electronics and information technologies. Ferroelectrics have already been established as a dominant branch in the electronics sector because of their diverse application range such as ferroelectric memories, ferroelectric tunnel junctions, etc. The on-going dimensional downscaling of …
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Synthesis and Characterization of Ferroelectric Nanomaterials
… hydrothermal and citrate-gel methods. The ferroelectric properties of the prepared cosubstituted Bi4Ti3O12 ceramics were studied using P–E hysteresis loop, leakage, and polarization fatigue measurements. A two-phase solvothermal synthesis approach for the preparation of hydrophobic BaTiO3 …
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Photovoltaic Properties of Ferroelectric Thin Films
This project seeks to evaluate ferroelectric thin film materials in term of their photovoltaic properties. The ferroelectric thin films with strong photovoltaic effects are deposited on silicon substrate; hence it opens a new window for integration towards opto-electronic application. The effects …
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Structure Property Relations in Ferroelectric Materials
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-12T19:51:42Z No. of bitstreams: 1 Fanning.pdf: 1183395 bytes, checksum: a6a6cc2d47d222a98d4a06b8c25b1a46 (MD5)
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Ferroelectric devices for advanced computing applications
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
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Magnetoelectric Effect in Ferroelectric-Ferromagnetic Heterostructures
… we sought to clarify the relationship between ferroelectric/ferroelastic phase transformation and the magnetoelectric effect in CFO films on PMN-PT heterostructures. Elastic strain is an essential component of electro-mechanical-magnetic coupling. Most prior studies that used piezoelectric …
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Dry etching processes for ferroelectric capacitors
Dry etching processes for patterning of ferroelectric thin films using environmental benign etching gases was developed. The PbZr<sub>x</sub>Ti<sub>1-x</sub>O3 (PZT) and RuO<sub>2</sub> films were patterned using CHCIFCF<sub>3</sub> and O<sub>2</sub>. Selective etching between PZT and …
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Ferroelectric System Dynamics and the Properties of Ferroelectric / Two-Dimensional Electron Gas Heterostructures: a Ginzburg–Landau Study
… dynamic polarization hysteresis behavior of a ferroelectric system subjected to a sinusoidal electric field. We examine polarization hysteresis loop structure as a function of both field amplitude and field frequency. The relationship between the latter and hysteresis loop area, i.e., …
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Multiscale Simulations of Dynamics of Ferroelectric Domains
Ferroelectric materials exhibiting switchable polarization have been used as critical components in electronics, memory, actuators and acoustics, and electro-optics. The applications of ferroelectric materials heavily rely on the interactions between the polarization and external perturbations, …
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Compact Leaky Wave Antenna Using Ferroelectric Materials
Leaky wave antenna continuously attracts a lot interests for tuning the radiation direction over a large angle. Various types of leaky wave antenna have been developed since 1940. However, most of these leaky wave antennas suffered from their excessive volume and the required wide range of …
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Acousto-Electric Impedance Of Ferroelectric Phononic Superlattice
The Acousto-Electric Impedance z of a Ferroelectric Phononic Superlattice (fps) is investigated. The analytical derivation of z and its phase reveal that both are functions of physical parameters such as the electromechanical coupling coefficient, the mechanical quality factor, the domain length …
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Tunable microwave filters using ferroelectric thin films
… in recent years. The frequency agility of the ferroelectric devices is based on the external DC electric field controlled permittivity of BST thin film. In this research work, several tunable microwave filters incorporating BST thin film varactors operating in a frequency range between 1 GHz …
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Carrier manipulation in graphene/ferroelectric hybrid structures
… of these material classes - graphene and ferroelectric oxides. First, the major road blocks complicating previous attempts to integrate graphene with ferroelectric oxides are identified. The hybrid devices fabricated so far suffered from extrinsic hysteresis effects from adsorbed molecules …
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Characterization of Ferroelectric Films by Spectroscopic Ellipsometry
Process dependent microstructural effects in ferroelectric SrBi2Ta2O9 (SBT) thin films were characterized and distinguished from material dependent optical properties using a systematic multi-layer modeling technique. Variable angle spectroscopic ellipsometry (VASE) models were developed by …
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Hall Potential Mapping of Conducting Ferroelectric Domain Walls
… phenomenon of distinct conductivity at certain ferroelectric domain walls has the potential to revolutionise nanoelectronics. Complete control over their local carrier properties would allow two-dimensional analogues of semiconducting devices to be dynamically written, effectively supplanting …
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Acoustic Generation by Nonuniform Polarization in Ferroelectric Ceramics
Made available in DSpace on 2015-05-13T15:20:44Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7524332.PDF: 3419372 bytes, checksum: 62b135bc160fd6331af4524f40b56de3 (MD5) Previous issue date: 1975
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Damping Behavior in Ferroelectric Reinforced Metal Matrix Composites
Ferroelectric-reinforced metal matrix composites (FR-MMCs) show promise as high damping materials for structural applications. Most structural materials are valued based on their stiffness and strength; however, stiff materials typically have limited inherent ability to dampen mechanical or …
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