Hydrothermal Deposition of Barium Titanate Heteroepitaxial Thin Films PDF Download
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Author: Sandeep Patil
Publisher:
ISBN:
Category : Thin films
Languages : en
Pages : 132
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Book Description
"Epitaxial barium titanate films were deposited on single crystal substrates of (100) SrTiO3 under hydrothermal conditions at 150 degrees C by reacting fine TiO2 particles with an aqueous solution of Ba(OH)2. The nucleation and growth as well as the structure and composition of the films were investigated using structural characterization techniques and surface science techniques."--Abstract, p. iv.
Author: Sandeep Patil
Publisher:
ISBN:
Category : Thin films
Languages : en
Pages : 132
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Book Description
"Epitaxial barium titanate films were deposited on single crystal substrates of (100) SrTiO3 under hydrothermal conditions at 150 degrees C by reacting fine TiO2 particles with an aqueous solution of Ba(OH)2. The nucleation and growth as well as the structure and composition of the films were investigated using structural characterization techniques and surface science techniques."--Abstract, p. iv.
Author: Emin Ciftci
Publisher:
ISBN:
Category :
Languages : en
Pages : 63
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Author: Ilias Nikolaidis
Publisher:
ISBN:
Category :
Languages : en
Pages : 241
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Author: Kenneth Morian Ring
Publisher:
ISBN:
Category :
Languages : en
Pages : 456
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Author: Waltraud M. Kriven
Publisher: John Wiley & Sons
ISBN: 0470295244
Category : Technology & Engineering
Languages : en
Pages : 667
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Book Description
This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Author: K. M. Nair
Publisher: John Wiley & Sons
ISBN: 1118406761
Category : Technology & Engineering
Languages : en
Pages : 496
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Book Description
This volume contains a collection of 40 papers from two symposia: Advanced Dielectric Materials and Multilayer Electronic Devices and High Strain Piezoelectric Materials, Devices and Applications. Topics include fundamental and historical perspectives of dielectric materials; relaxor materials and devices; high strain piezoelectric devices; advanced aspects of powder preparation, characterization, and properties; thin films; materials for low and high frequency applications; processing-structure-property-relationships; and future applications. Proceedings of the symposium held at the 105th Annual Meeting of The American Ceramic Society, April 27-30, 2003, in Nashville, Tennessee; Ceramic Transactions, Volume 150.
Author: Xuezheng Wei
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages :
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Barium strontium titanate (BST) solid-solution oxides represent an important class of ferroelectric materials due to their high dielectric constants, composition dependent Curie temperature, and potential applications in dynamic random access memory (DRAM). Hydrothermal technique is a new low-temperature (
Author: 洪錕銘 (化學工程)
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
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Category :
Languages : en
Pages :
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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.
Author: Gregory Matthew Ford
Publisher:
ISBN:
Category :
Languages : en
Pages :
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A simple gain model using the parameters determined in this study indicates Er doped BaTiO$\sb3$ is a promising optically active media if the losses can be sufficiently reduced.
