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Ac Loss And Macroscopic Theory Of Superconductors
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Book Synopsis AC Loss and Macroscopic Theory of Superconductors by : W.J. Carr, Jr.
Download or read book AC Loss and Macroscopic Theory of Superconductors written by W.J. Carr, Jr. and published by CRC Press. This book was released on 2001-07-05 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through the 'magic' of averages it is shown that Maxwell's equations can be used in a simple way to describe filamentary composites as well as pure bulk superconductors. The second edition of AC Loss and Macroscopic Theory of Superconductors, like the first edition, is written for both physicists and engineers. It starts with a rigorous and partially new derivation of Maxwell's equations as they apply to superconductors, and the remainder of the book is devoted to loss approximations for a wide range of applications. The chapters on high-Tc materials were updated and include a change to SI units and the addition of some historical perspective.
Book Synopsis AC Loss and Macroscopic Theory of Superconductors by : W.J. Carr Jr.
Download or read book AC Loss and Macroscopic Theory of Superconductors written by W.J. Carr Jr. and published by CRC Press. This book was released on 2001-07-05 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through the 'magic' of averages it is shown that Maxwell's equations can be used in a simple way to describe filamentary composites as well as pure bulk superconductors. The second edition of AC Loss and Macroscopic Theory of Superconductors, like the first edition, is written for both physicists and engineers. It starts with a rigorous and partial
Book Synopsis AC Loss and Macroscopic Theory of Superconductors by : W. J. Carr
Download or read book AC Loss and Macroscopic Theory of Superconductors written by W. J. Carr and published by Harwood Academic Publishers. This book was released on 2001-04 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, like the first edition, is written for both physicists and engineers. It starts with a rigorous and partly new derivation of Maxwell's equations as they apply to superconductors. Through the magic of averages it is shown that Maxwell's equations can be used in a simple way to describe filamentory composites as well as pure bulk superconductors. Rigorous expressions for the loss in a superconductor are then derived, and the remainder of the book is devoted to loss approximations for a wide range of applications. New chapters on high-Tc materials have been added, and the original chapters have been updated, including a change of units to SI, and the addition of some historical perspective.
Book Synopsis Program to Study AC Loss in High-Tc Superconductors by : W. Carr
Download or read book Program to Study AC Loss in High-Tc Superconductors written by W. Carr and published by . This book was released on 1998 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Work performed under this program consisted of (a) consultative work with Wright-Patterson Air Force Base, (b) joint work with WPAFB to develop a concept for converting YBCO films deposited on a wide substrate strip into a conductor with a pattern of narrow spiral filamentary strips for AC operation, (c) calculation of the additional losses due to substrates on YBCO conductors and sheaths on BSCCO type conductors, and (d) new loss theory for polycrystalline high-T(c) superconductors based on Maxwell's equations.
Book Synopsis Macroscopic Theory of Superconductivity by : Fritz London
Download or read book Macroscopic Theory of Superconductivity written by Fritz London and published by . This book was released on 1961 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Theoretical and Experimental Study of the AC Losses of a High Field Superconductor and the Implications for Power Applications by : Donald Joseph Hanrahan
Download or read book A Theoretical and Experimental Study of the AC Losses of a High Field Superconductor and the Implications for Power Applications written by Donald Joseph Hanrahan and published by . This book was released on 1969 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theory for the hysteresis loss of a high-field superconductor carrying ac is presented, based on the Riemersma critical state model (B x J = C). Voltage waveforms, energy loss per cycle, and limiting values of effective resistivity are derived. For sinusoidal current of frequency f in 10-mil wire the high (critical) current limit of resistivity is found to be 4.06 x 10 to the -14th power f (ohm-meter) compared to 0.93 x 10 to the -16th power f for a current peak of one-tenth the critical current; both values are independent of the high-field material used. An equivalent circuit consisting of a variable inductance is proposed for the hysteretic superconductor and three possible definitions of the inductance are discussed. In any case, the inductance is nonlinear, a transcendental function of the current, the function being different on the four segments of a hysteresis loop. The high-current limit of the absolute, internal inductance (the preferred definition) per unit length is mu sub zero/3 pi (henry/meter). Experiments were performed at 4.2K on bifilar windings of 10-mil, Nb25%Zr wire, both bare and copper plated. Currents up to the critical value were used at frequencies of 60, 400, and 800 Hz. The feasibility of applying superconductivity to two classes of ac power equipment is discussed: (1) conventional apparatus such as transformers and rotating machines, already highly efficient, and (2) low-voltage static inverters which are not so efficient. A novel circuit is presented for a superconducting inverter or oscillator. (Author).
Book Synopsis Studies On AC Losses In Certain Type II Superconductors by :
Download or read book Studies On AC Losses In Certain Type II Superconductors written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies on ac losses in superconductors have been a subject of great interest for a long time not only as an important topic in fundamental science, but also as a basic requirement for the application of superconductors. A proper understanding of the mechanisms of ac losses and their quantitative knowledge is an essential requirement for any application. Such studies not only yield information on the material parameters crucial for applications but can also provide a test for any possible microscopic theory of superconductivity. The main focus of the current thesis is to understand the mechanisms of ac losses in superconductors and to gain more knowledge on the ac dissipative behavior of type II superconductors. In this thesis we report our investigations on the ac losses in certain type II superconductors at different ranges of frequency through different experimental techniques. We have investigated the ac losses that arise in high Tc superconducting single crystals at rf frequency (8 MHz) using a simple LC oscillator technique. The result shows a surprising ac dissipation behavior in which the loss in the superconducting state is more than the normal state loss. Even though the superconducting state is defined as the zero resistive state, this is true only for dc transport. The ac resistivity studies have been made also on high Tc polycrystalline samples using the standard four-probe technique using a lock-in amplifier (100 kHz). The result shows different ac resistive behavior for samples with different microstructures. Non-resonant microwave absorption (NRMA) studies in MgB2 thin films is reported for the first time. The experiment has been performed using a continuous wave X band EPR spectrometer. The recorded signals give information on the ac losses that occurs at microwave frequency (9.43 GHz). The effects of ac magnetic field on the superconductors have been investigated through a dc four-probe resistivity measurements in the presence of an ac field of dif.
Book Synopsis Basic Macroscopic Principles of Applied Superconductivity by : V.R. Romanovskii
Download or read book Basic Macroscopic Principles of Applied Superconductivity written by V.R. Romanovskii and published by CRC Press. This book was released on 2021-08-29 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Allows detailed understanding of the superconductivity phenomenon. Presents fundamental models describing interconnected electrodynamics and thermal phenomena in LTS and HTS superconductors with ideal and real voltage-current characteristics. Calculates boundary of superconducting state instability with respect to any disturbance according to formulated total mechanism of superconductivity distraction. Investigates the irreversible propagation of normal zone in current-carrying elements of superconducting magnets during flux creep. Describes quench phenomena in LTS and HTS superconductors.
Book Synopsis Handbook of Superconductivity by : David A. Cardwell
Download or read book Handbook of Superconductivity written by David A. Cardwell and published by CRC Press. This book was released on 2022-07-05 with total page 881 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the last of three volumes of the extensively revised and updated second edition of the Handbook of Superconductivity. The past twenty years have seen rapid progress in superconducting materials, which exhibit one of the most remarkable physical states of matter ever to be discovered. Superconductivity brings quantum mechanics to the scale of the everyday world. Viable applications of superconductors rely fundamentally on an understanding of these intriguing phenomena and the availability of a range of materials with bespoke properties to meet practical needs. While the first volume covers fundamentals and various classes of materials, the second addresses processing of these into various shapes and configurations needed for applications, and ends with chapters on refrigeration methods necessary to attain the superconducting state and the desired performance. This third volume starts with a wide range of methods permitting one to characterize both the materials and various end products of processing. Subsequently, diverse classes of both large scale and electronic applications are described. Volume 3 ends with a glossary relevant to all three volumes. Key Features: Covers the depth and breadth of the field Includes contributions from leading academics and industry professionals across the world Provides hands-on familiarity with the characterization methods and offers descriptions of representative examples of practical applications A comprehensive reference, the handbook is suitable for both graduate students and practitioners in experimental physics, materials science, and multiple engineering disciplines, including electronic and electrical, chemical, mechanical, metallurgy and others.
Book Synopsis Macroscopic Superconducting Phenomena by : Antonio Badía-Majós
Download or read book Macroscopic Superconducting Phenomena written by Antonio Badía-Majós and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A number of macroscopic manifestations of superconducting phenomena (such as zero electrical resistance, the expulsion of magnetic fields and the Josephson effect) have resulted in a proliferation of applications in engineering and electronics. This book takes a practical, pedagogical approach to understanding the electromagnetic properties of superconducting materials. The reader is provided with a set of ready-to-use interactive tools to engage with topics such as vanishing resistivity, magnetic flux expulsion, flux pinning, critical currents, flux quantization and more. Aimed at high level undergraduate and graduate physicists and engineers, this book is ideal for early researchers studying macroscopic superconductivity.
Book Synopsis Fundamental Elements of Applied Superconductivity in Electrical Engineering by : Yinshun Wang
Download or read book Fundamental Elements of Applied Superconductivity in Electrical Engineering written by Yinshun Wang and published by John Wiley & Sons. This book was released on 2013-06-24 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconducting technology is potentially important as one of the future smart grid technologies. It is a combination of superconductor materials, electrical engineering, cryogenic insulation, cryogenics and cryostats. There has been no specific book fully describing this branch of science and technology in electrical engineering. However, this book includes these areas, and is essential for those majoring in applied superconductivity in electrical engineering. Recently, superconducting technology has made great progress. Many universities and companies are involved in applied superconductivity with the support of government. Over the next five years, departments of electrical engineering in universities and companies will become more involved in this area. This book: • will enable people to directly carry out research on applied superconductivity in electrical engineering • is more comprehensive and practical when compared to other advances • presents a clear introduction to the application of superconductor in electrical engineering and related fundamental technologies • arms readers with the technological aspects of superconductivity required to produce a machine • covers power supplying technologies in superconducting electric apparatus • is well organized and adaptable for students, lecturers, researchers and engineers • lecture slides suitable for lecturers available on the Wiley Companion Website Fundamental Elements of Applied Superconductivity in Electrical Engineering is ideal for academic researchers, graduates and undergraduate students in electrical engineering. It is also an excellent reference work for superconducting device researchers and engineers.
Book Synopsis Introduction to High-Temperature Superconductivity by : Thomas Sheahen
Download or read book Introduction to High-Temperature Superconductivity written by Thomas Sheahen and published by Springer Science & Business Media. This book was released on 2006-02-24 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing from physics, mechanical engineering, electrical engineering, ceramics, and metallurgy, high-temperature superconductivity (HTSC) spans nearly the entire realm of materials science. This volume presents each of those disciplines at an introductory level, such that readers will ultimately be able to read the literature in the field.
Book Synopsis AC Loss Characteristic of High-Tc Superconductors in Rotating Magnetic Field by : Probir Kumar Ghoshal
Download or read book AC Loss Characteristic of High-Tc Superconductors in Rotating Magnetic Field written by Probir Kumar Ghoshal and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Case Studies in Superconducting Magnets by : Yukikazu Iwasa
Download or read book Case Studies in Superconducting Magnets written by Yukikazu Iwasa and published by Springer Science & Business Media. This book was released on 2009-04-05 with total page 717 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2nd edition emphasizes two areas not emphasized in the 1st edition: 1) high-temperature superconductor (HTS) magnets; 2) NMR (nuclear magnetic resonance) and MRI (magnetic resonance imaging) magnets. Despite nearly 40 years of R and D on superconducting magnet technology, most areas, notably fusion and electric power applications, are still in the R and D stage. One exception is in the area of NMR and MRI. NMR magnets are very popular among chemists, biologists, genome scientists, and most of all, by drug manufacturers for drug discovery and development. MRI and NMR magnets have become the most successful application of superconducting magnet technology and this trend should continue. The 2nd edition will have new materials never treated formally in any other book of this kind. As with the 1st, most subjects will be presented through problem format to educate and train the designer.
Book Synopsis A.C. Losses and Flux Pinning in High Temperature Superconductors by : Anant Narlikar
Download or read book A.C. Losses and Flux Pinning in High Temperature Superconductors written by Anant Narlikar and published by . This book was released on 2000 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on the issue of AC losses in wires and tapes, with chapters on AC losses of HTS tapes and wires, AC susceptibility and losses of Bi- 2223/Ag tapes in perpendicular AC magnetic fields, AC losses in bulk high-temperature superconductors, modeling and computation of AC losses in HTS conductors and magnets, residual losses in high Tc superconductors, transport property and AC losses of high Tc superconducting tape and conductors, and flux pinning in 123-type high Tc superconductors.
Book Synopsis A.C. Losses and Flux Pinning and Formation of Stripe Phase by : A. V. Narlikar
Download or read book A.C. Losses and Flux Pinning and Formation of Stripe Phase written by A. V. Narlikar and published by Nova Publishers. This book was released on 2000 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: AC Losses & Flux Pinning & Formation of Stripe Phase
Book Synopsis AC LOSS AND STABILITY OF LOW-AND HIGH-Tc-SUPERCONDUCTORS by : H. H. J. Ten Kate
Download or read book AC LOSS AND STABILITY OF LOW-AND HIGH-Tc-SUPERCONDUCTORS written by H. H. J. Ten Kate and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
