Preparation of the High-Tc Superconductor YBa2Cu3O(7-x) Using Organometallic Precursors
Preparation of the High-Tc Superconductor YBa2Cu3O(7-x) Using Organometallic Precursors

Author: Leonard V. Interrante

Publisher:

Published: 1988

Total Pages: 18

ISBN-13:

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Organic soluble precursors to the high Tc 1-2-3 superconductor, YBa2Cu3O7-x, have been prepared using polyesters derived from the interaction of citric acid (CA) or ethyl-enediaminetetraacetric acid (EDTA) with ethylene glycol. Mixtures of the nitrate, carbonate and/or acetate salts of the three metal ions with CA or EDTA and ethylene glycol were heated to obtain homogeneous green solids containing the desired 1:2:3 ratios of Y3+, Ba2+, and Cu2+ ions. Pyrolysis at 850C-960C in oxygen gave the superconducting, orthorhombic, YBa2Cu3O7-x phase. Films of the superconductor were prepared by dropping ethylene glycol solutions of these precursors onto zirconia and alumina substrates, followed by pyrolysis to 950 C in O2. The results of TGA/DSC and FTIR studies of these precursors, as well as XRD, FTIR, pyrolysis/GC, electrical and magnetic property measurements on the pyrolysis products are presented and discussed in the context of the probable precursor structures and pyrolysis chemistry. Keywords: Superconductor, Precursor, Thin films, Copper oxides, Yttrium compounds, Barium compounds. (MJM).

Physical Properties of High-Temperature Superconductors
Physical Properties of High-Temperature Superconductors

Author: Rainer Wesche

Publisher: John Wiley & Sons

Published: 2015-05-13

Total Pages: 544

ISBN-13: 1118696697

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A much-needed update on complex high-temperaturesuperconductors, focusing on materials aspects; this timely bookcoincides with a recent major break-through of the discovery ofiron-based superconductors. It provides an overview of materials aspects of high-temperaturesuperconductors, combining introductory aspects, description of newphysics, material aspects, and a description of the materialproperties This title is suitable for researchers inmaterials science, physics and engineering. Also for techniciansinterested in the applications of superconductors, e.g. asbiomagnets

Synthesis of Inorganic Materials
Synthesis of Inorganic Materials

Author: Ulrich S. Schubert

Publisher: John Wiley & Sons

Published: 2019-08-27

Total Pages: 144

ISBN-13: 3527815147

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Introduces readers to the field of inorganic materials, while emphasizing synthesis and modification techniques Written from the chemist's point of view, this newly updated and completely revised fourth edition of Synthesis of Inorganic Materials provides a thorough and pedagogical introduction to the exciting and fast developing field of inorganic materials and features all of the latest developments. New to this edition is a chapter on self-assembly and self-organization, as well as all-new content on: demixing of glasses, non-classical crystallization, precursor chemistry, citrate-gel and Pechini liquid mix methods, ice-templating, and materials with hierarchical porosity. Synthesis of Inorganic Materials, 4th Edition features chapters covering: solid-state reactions; formation of solids from the gas phase; formation of solids from solutions and melts; preparation and modification of inorganic polymers; self-assembly and self-organization; templated materials; and nanostructured materials. There is also an extensive glossary to help bridge the gap between chemistry, solid state physics and materials science. In addition, a selection of books and review articles is provided at the end of each chapter as a starting point for more in-depth reading. -Gives the students a thorough overview of the fundamentals and the wide variety of different inorganic materials with applications in research as well as in industry -Every chapter is updated with new content -Includes a completely new chapter covering self-assembly and self-organization -Written by well-known and experienced authors who follow an intuitive and pedagogical approach Synthesis of Inorganic Materials, 4th Edition is a valuable resource for advanced undergraduate students as well as masters and graduate students of inorganic chemistry and materials science.

Industrial Chemistry of Oxides for Emerging Applications
Industrial Chemistry of Oxides for Emerging Applications

Author: Lech Pawlowski

Publisher: John Wiley & Sons

Published: 2018-03-14

Total Pages: 421

ISBN-13: 1119424054

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Valuable insights into the extraction, production, and properties of a large number of natural and synthetic oxides utilized in applications worldwide from ceramics, electronic components, and coatings This handbook describes each of the major oxides chronologically—starting from the processes of extraction of ores containing oxides, their purification and transformations into pure alloyed powders, and their appropriate characterization up to the processes of formation of 2D films by such methods as PVD, CVD, and coatings by thermal spraying or complicated 3D objects by sintering and rapid prototyping. The selection of oxides has been guided by the current context of industrial applications. An important point that is considered in the book concerns the strategic aspects of oxides. Some oxides (e.g. rare earth ones) become more expensive due to the growing demand for them, others, because of the strategic importance of countries producing raw materials and the countries that are using them. Industrial Chemistry of Oxides for Emerging Applications provides readers with everything they need to know in 7 chapters that cover: technical and economical importance of oxides in present and future; fundamentals of oxides manufacturing; extraction, properties, and applications of Al2O3; extraction, properties, and applications of ZrO2; synthesis, properties, and applications of YBaCu2O7x; extraction, properties, and applications of TiO2; and synthesis, properties, and application of hydroxyapatite. Presents the extraction, production, and properties of a large fraction of oxides applications worldwide, both natural as well as synthetic multi‐oxides Covers a very important segment of many industrial processes, such as refractories and piezoelectric oxides—both applications constituting very large market segments Developed from a lecture course given by the authors for over a decade Industrial Chemistry of Oxides for Emerging Applications is an excellent text for university professors and teachers, and graduate and postgraduate students with a solid background in physics and chemistry.