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in subjects: "Ferroelectric Materials"  
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Report on Phase 1A of demonstration of scientific and economic feasibility of a solid-state heat engine

Description: Progress is reported on the major tasks of this program including measurements of material parameters relevant to dielectric power conversion, hysteresis reversal time, Curie temperature, Devonshire coefficients, and resistivities. The engine cycle tests are reported, and performance versus predictions is analyzed. Engineering and economic projections are made based upon these results, and engineering and materials problems are identified. (WHK)
Date: January 31, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vacancy related defects in thin film Pb(ZrTi)O{sub 3} materials

Description: Positron annihilation techniques have been applied to characterize vacancy-related defects in ferroelectric thin film structures. Variable energy positron beam measurements were carried out on doped and undoped Pb(ZrTi)O{sub 3} (PZT) samples subjected to different post-deposition cool down and anneal conditions. The PZT was deposited by sol-gel with either with platinum or RuO{sub 2} electrodes, or by laser ablation with La{sub 0.5}Sr{sub 0.5}CoO{sub 3} electrodes. The RuO{sub 2} and La{sub 0.5… more
Date: December 31, 1994
Creator: Krishnan, A.; Keeble, D. J.; Ramesh, R.; Warren, W. L.; Tuttle, B. A.; Pfeffer, R. L. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solution chemistry optimization of sol-gel processed PZT thin films

Description: We have optimized the ferroelectric properties and microstructural characteristics of sol-gel PZT thin films used in a CMOS-integrated, 256 bit ferroelectric non-volatile memory. The sol-gel process utilized in our work involved the reaction of Zr n-butoxide, Ti isopropoxide, and Pb (IV) acetate in a methanol/acetic acid solvent system. A 10-factor screening experiment identified solution concentration, acetic acid addition, and water volume as the solution chemistry factors having the most sig… more
Date: December 31, 1992
Creator: Lockwood, S. J. Schwartz, R. W.; Tuttle, B. A. & Thomas, E. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mechanisms for the operation of thin film transistors on ferroelectrics

Description: The electric field emanating from the surface of a poled ferroelectric can control the conduction properties of an overlaying semiconducting film, this combination of materials can thus serve as a non-destructive readout, non-volatile memory device. Here the authors will describe a variety of experimental studies of these devices designed to probe the physics of their operation. The experimental systems included sputtered, n-type semiconductor (SC) films of In{sub 2}O{sub 3} and ZnO deposited o… more
Date: December 31, 1993
Creator: Seager, C. H.; McIntyre, D.; Tuttle, B. A. & Evans, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

EMMA: Electromechanical Modeling in ALEGRA

Description: To ensure high levels of deterrent capability in the 21st century, new stockpile stewardship principles are being embraced at Sandia National Laboratories. The Department of Energy Accelerated Strategic Computing Initiative (ASCI) program is providing the computational capacity and capability as well as funding the system and simulation software infrastructure necessary to provide accurate, precise and predictive modeling of important components and devices. An important class of components req… more
Date: December 31, 1996
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Detecting and characterizing ferroelectric domain boundaries using nonphase-matched second harmonic generation

Description: We demonstrate that tilted planar ferroelectric domain boundaries create tilted second harmonic beams in nonphase-matched second harmonic generation, and that the tilt of the boundary can be deduced from the harmonic direction.
Date: December 31, 1998
Creator: Gehr, Russell J.; Alford, W. J. & Smith, A. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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