Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Polarization switching"”.
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Investigation of polarization switching over broad time and field domains in various ferroelectrics
Investigations of polarization switching over broad time and electric field domains, in various modified Pb-based perovskite ferroelectrics, were systematically performed by ferroelectric switching current transient and bipolar drive P-E responses. Studies were performed from E«Ec to E»Ec, where Ec …
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Processing and characterization of lithium niobate thin films for ferroelectric nonvolatile memory applications
… fabricated and electrically characterized with polarization vs. electric field (P-E) and capacitance vs. voltage (C-V) measurements. Hysteresis curves based on polarization switching are observed, verifying the ferroelectricity of deposited LiNbO3 thin films. Comparison of different film growth …
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Electrical characterizations of lithium niobate thin films in a metal-ferroelectric-semiconductor capacitor
… characterization methods for studying the polarization switching and the thin film conduction behavior. The polarization density vs. electric field (P-E) curve shows that the remnant polarization is 16.85muC/cm2 and the coercive field is 117.25 KV/cm when maximum applied field is 286.2KV/cm …
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The Effects of Strain and Vacancies on the Electric and Vibrational Properties of Ferroelectric BaTiO3 from First-principles
… in this dissertation to enable the study of polarization for charged system.</p> <p>In this work I report behaviors of polarization in rhombohedral (R3m) BaTiO3 (BTO) that do not conform with intuition, or the current state of known behavior of epitaxially strained BTO. These studies reveal a …
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Modulation approaches of vertical-cavity surface-emitting lasers with mode control
… increased independent of the optical apertures. Polarization modulation of anisotropic VCSELs gives an extinction ratio of greater than 9 dB and at the same time requires low modulation amplitude of less than 200 mV, due to the orthogonality of the polarization states. To achieve polarization …
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Possibility of positive-pulse switching in systems of nonlinear Fabry-Perot cavities
… is studied and it was found that positive pulse switching is possible in a system of two coupled nonlinear cavities. First, Korpel and Lohmann's proposal of using polarization switching in a single nonlinear birefringent cavity was studied. After a detailed investigation of their proposal it was …
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Investigating the Thermal Stability and Cation Ordering in Layered Cathode LixMO2 (x ≤ 1; M = Co, Mn, Ni) Materials for Li-ion Rechargeable Batteries and Studying the Ferroelectric Properties of LiNbO3 Nanoparticles
… observed that both sets of particles exhibited polarization switching at room temperature with static <em>d</em>33 coefficient values of 17 pm/V for cube-like and 12 pm/V for spherical LN nanoparticles.
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Electro-thermal nanoprobes for nanometrology and nanofabrication
… ferroelectric-coated nanoprobes demonstrate tip polarization switching with the intention of being used for enhanced pyroelectric electron emission.
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Structure-property correlations in compositionally complex ferroelectrics
… in local chemistry, structure, and polarization is revealed through comprehensive STEM characterization. These experimental results also validate theoretical models proposed since the discovery of relaxors. Further, due to the extensive demand for miniaturization of modern electronic …