Download or read book Intrinsic and Substrate Dependent Properties of Polycrystalline Barium Titanate Thin Films written by Kenneth Morian Ring and published by . This book was released on 1999 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Properties of Barium Titanate Solid Solution Thin Films on Copper Substrates written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Barium titanate thin films were deposited via chemical solution deposition using a hybrid-chelate chemistry directly on copper foil substrates. A process was developed to crystallize and densify the ferroelectric films at 900C by using a reductive atmosphere containing nitrogen, hydrogen, water vapor, and oxygen impurities such that film constituents were oxidized to form barium titanate and the foil substrate remained metallic. The crystallized films are polycrystalline with equiaxed morphology and average grain diameters in excess of 100 nm. The dielectric properties exhibit permittivities in excess of 1800 at room temperature and zero bias with tunabilites of greater than 90% and high field loss tangents of less than 1%. A series of samples was prepared with varying grain and crystallite sizes by dividing and processing a single film over a range of temperature from 700 to 900C. This ensures that the chemical composition and film thickness is invariant for each sample. It is shown that the grain size increases with higher process temperatures and results in a concomitant increase in permittivity and tunability. These enhancements, combined with the constant paraelectricD erroelectric phase transition temperature, indicated that a combination of film crystallinity and grain size is responsible for diminished performance. The phase transition temperature and temperature coefficient of capacitance modified by partially substituting zirconium, hafnium, and tin for titanium. The resulting films were single phase and the phase transition shifts were consistent with bulk materials. A reduction in permittivity was observed for increasing substituent level and was attributed to a reduction in grain size for both barium titanate zirconate and barium titanate hafnate. Processing conditions were chosen to stabilize Sn2+ during the firing process in an attempt to flux the system and increase grain size. The barium titanate stannate films had less reduction in grain size.

Download or read book Fabrication and Characterization of Barium Titanate Thin Film on Polycrystalline Nickel Substrate written by Parisa Sahebi and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferroelectric BaTiO3 (BTO) thin films were deposited on polycrystalline nickel disks and silicon wafer substrates by rf magnetron sputtering. Nickel oxide (NiO) and nanocrystalline nickel (nc-Ni) layers were used as interfacial buffer layers. Microstructural studies with X-ray diffraction and transmission electron microscopy reveal that the BTO films deposited at temperatures lower than 700°C have an amorphous structure. However, the BTO films sputtered at temperatures higher than 700°C are partially crystalline. BTO films have a good and continuous interface with both interfacial layers with no interdiffusion or reaction with the substrates. In the case of BTO deposition with nc-Ni interlayer at higher deposition temperature of 800°C, a thin NiO layer forms between the nc-Ni and BTO films. Having nc-Ni as an interfacial layer enhances surface morphology and decreases surface roughness. This study shows that nc-Ni can act as a proper interfacial layer between a ceramic like BTO and the metallic substrates and is a better alternative for NiO buffer layer.

Download or read book Electrical Properties of Vacuum Deposited Barium Titanate on Single Crystal Gold and Platinum Substrates written by Alfred John Wunschel and published by . This book was released on 1969 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2000 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Properties of Barium Titanate Solid Solution Thin Films on Copper Substrates written by Jon Fredrick Ihlefeld and published by . This book was released on 2006 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: hafnium, tin, zirconium, flux, copper, equilibria, grain size, size effects, sol-gel, barium titanate, film, ferroelectric, doping.

Download or read book Growth and Properties of Barium Titanate Thin Films written by John Renshaw Slack and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physical and Electrical Properties of Thin Film Barium Titanate Preparted by RF Sputtering on Silicon Substrate written by Galeb Hamid Maher and published by . This book was released on 1972 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physical and Electrical Properties of Thin Film Barium Titanate Prepared by RF Sputtering on Silicon Substrate written by Galeb Hamid Maher and published by . This book was released on 1972 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Properties of Barium Titanate Thin Films written by Shan-Nan Chen and published by . This book was released on 1985 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dielectric Properties of Flash evaporated Thin Films of Barium Titanate written by Andrew John Kennedy and published by . This book was released on 1964 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Properties of Rare Earth Doped Barium Titanate Thin Films Prepared by Metalorganic Vapor Deposition written by Bruce A. Block and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The microstructure of the $\rm BaTiO\sb3$ films was investigated. The surface roughness generally increased with thickness, and the films were composed of many small subgrains, 0.1 to 0.3 microns in diameter. Grain boundary grooving was responsible for the observed surface roughening. Deposition of the metalorganic precursor on the substrate prior to the initiation of growth also contributed greatly to the surface roughness.

Download or read book Polar Oxides written by Rainer Waser and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, more than 20 experts from leading research institutes around the world present the entire scope of this rapidly developing field. In so doing, they cover a wide range of topics, including the characterization and investigation of structural, dielectric and piezoelectric properties of ceramic materials, a well as phase transitions, electrical and optical properties and microscopic investigations. Another feature is a complete profile of the properties of polar oxides -- from their proof to their latest applications. Throughout, the authors review, discuss and assess the material properties with regard to new and advanced characterization and imaging techniques. For physicists, physicochemists, semiconductor and solid state physicists, materials scientists, and students of chemistry and physics.

Download or read book JJAP written by and published by . This book was released on 1994 with total page 1034 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nanostructures in Ferroelectric Films for Energy Applications written by Jun Ouyang and published by Elsevier. This book was released on 2019-07-15 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructures in Ferroelectric Films for Energy Applications: Grains, Domains, Interfaces and the Engineering Methods presents methods of engineering nanostructures in ferroelectric films to improve their performance in energy harvesting and conversion and storage. Ferroelectric films, which have broad applications, including the emerging energy technology, usually consist of nanoscale inhomogeneities. For polycrystalline films, the size and distribution of nano-grains determines the macroscopic properties, especially the field-induced polarization response. For epitaxial films, the energy of internal long-range electric and elastic fields during their growth are minimized by formation of self-assembled nano-domains. This book is an accessible reference for both instructors in academia and R&D professionals. Provides the necessary components for the systematic study of the structure-property relationship in ferroelectric thin film materials using case studies in energy applications Written by leading experts in the research areas of piezoelectrics, electrocalorics, ferroelectric dielectrics (especially in capacitive energy storage), ferroelectric domains, and ferroelectric-Si technology Includes a well balanced mix of theoretical design and simulation, materials processing and integration, and dedicated characterization methods of the involved nanostructures

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1999 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: