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Author: Publisher: ISBN: Category : Languages : en Pages : 210
Book Description
The objective was to obtain both an understanding and control of superconducting and normal-state properties of layered, mostly epitaxial film structures incorporating high-critical-temperature oxide superconductors. Fulfillment is a step in the development of a technology base for superconducting electronics capable of operating is above the temperature of 50k, particularly for passive devices. The technology is based primarily on single-crystal YBCO films deposited by single-target sputtering. Based on a wide variety of characterization techniques, including tunneling and rf surface resistance, they are equal or superior to films made by any other method. Microwave devices fabricated with such films (in other programs at Westinghouse) showed markedly improved performance compared to conventional devices. The capability of sputtering YBCO films on large areas and on both sides of substrates was developed. State-of-the-art TBCCO and LSCO films were also prepared and evaluated. Procedures were developed for control of film orientation. Particular attention was given to film surfaces and interfaces with substrates, epitaxial buffer layers, and tunnel barriers. Specific results of the program are detailed in published papers appended to this report.
Author: Publisher: ISBN: Category : Languages : en Pages : 210
Book Description
The objective was to obtain both an understanding and control of superconducting and normal-state properties of layered, mostly epitaxial film structures incorporating high-critical-temperature oxide superconductors. Fulfillment is a step in the development of a technology base for superconducting electronics capable of operating is above the temperature of 50k, particularly for passive devices. The technology is based primarily on single-crystal YBCO films deposited by single-target sputtering. Based on a wide variety of characterization techniques, including tunneling and rf surface resistance, they are equal or superior to films made by any other method. Microwave devices fabricated with such films (in other programs at Westinghouse) showed markedly improved performance compared to conventional devices. The capability of sputtering YBCO films on large areas and on both sides of substrates was developed. State-of-the-art TBCCO and LSCO films were also prepared and evaluated. Procedures were developed for control of film orientation. Particular attention was given to film surfaces and interfaces with substrates, epitaxial buffer layers, and tunnel barriers. Specific results of the program are detailed in published papers appended to this report.
Author: Ko Hara Publisher: IOS Press ISBN: 9789051991277 Category : Technology & Engineering Languages : en Pages : 402
Book Description
Since the discovery of the new copper oxide superconductor in 1987, research groups who were preparing superconductivity electronics got into it. The body of this book contain work of researches in this new field. Some of these research groups originates from the semiconductor research field and the competition and collaboration of them accelerated research activities fortunately.
Author: H. Weinstock Publisher: Springer Science & Business Media ISBN: 940111918X Category : Technology & Engineering Languages : en Pages : 460
Book Description
This volume is based on the proceedings of the NATO-sponsored Advanced Studies Institute (ASn on The New Superconducting Electronics (held 9-20 August 1992 in Waterville Valley, New Hampshire USA). The contents herein are intended to provide an update to an earlier volume on the same subject (based on a NATO ASI held in 1988). Four years seems a relatively short time interval, and our title itself, featuring The New Superconducting Electronics, may appear somewhat pretentious. Nevertheless, we feel strongly that the ASI fostered a timely reexamination of the technical progress and application potential of this rapid-paced field. There are, indeed, many new avenues for technological innovation which were not envisioned or considered possible four years ago. The greatest advances by far have occurred with regard to oxide superconductors, the so-called high transition-temperature superconductors, known in short as HTS. These advances are mainly in the ability to fabricate both (1) high-quality, relatively large-area films for microwave filters and (2) multilayer device structures, principally superconducting-normal-superconducting (SNS) Josephson junctions, for superconducting-quantum-interference-device (SQUID) magnetometers. Additionally, we have seen the invention and development of the flux-flow transistor, a planar three-terminal device. During the earlier ASI only the very first HTS films with adequate critical-current density had just been fabricated, and these were of limited area and had high resistance for microwave current.
Author: Michel Cyrot Publisher: World Scientific ISBN: 9789810201449 Category : Technology & Engineering Languages : en Pages : 266
Book Description
What sets this book apart from others on the introduction to super-conductivity and high-c materials is its simple and pragmatic approach. The authors describe all relevant superconducting phenomena and rely on the macroscopic Ginzburg-Landau theory to derive the most important results. Examples are chosen from selected conventional superconductors like NbTi and compared to those of high-Tc materials. The text should be of interest to students and researchers in all branches of science and engineering, with the possible exception of theoretical physicists, who may require a more mathematical approach.
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Author: Ko Hara
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Author: Ko Hara
Author: T. Venkatesan
Author: Donald Anthony Telesca
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Author: Michel Cyrot
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