Enhancement Of Connectivity And Flux Pinning In Mgb2 Superconducting Bulks And Wires
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Enhancement Of Connectivity And Flux Pinning In Mgb2 Superconducting Bulks And Wires
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Author : Lin Lü
language : en
Publisher:
Release Date : 2009
Enhancement Of Connectivity And Flux Pinning In Mgb2 Superconducting Bulks And Wires written by Lin Lü and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Flux pinning categories.
Flux Pinning In Superconductors
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Author : Teruo Matsushita
language : en
Publisher: Springer
Release Date : 2014-03-06
Flux Pinning In Superconductors written by Teruo Matsushita and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-03-06 with Technology & Engineering categories.
The book covers the flux pinning mechanisms and properties and the electromagnetic phenomena caused by the flux pinning common for metallic, high-Tc and MgB2 superconductors. The condensation energy interaction known for normal precipitates or grain boundaries and the kinetic energy interaction proposed for artificial Nb pins in Nb-Ti, etc. are introduced for the pinning mechanism. Summation theories to derive the critical current density are discussed in detail. Irreversible magnetization and AC loss caused by the flux pinning are also discussed. The loss originally stems from the ohmic dissipation of normal electrons in the normal core driven by the electric field induced by the flux motion. The readers will learn why the resultant loss is of hysteresis type in spite of such mechanism. The influence of the flux pinning on the vortex phase diagram in high Tc superconductors is discussed and the dependencies of the irreversibility field are also described on other quantities such as anisotropy of superconductor, specimen size and electric field strength. Recent developments of critical current properties in various high-Tc superconductors and MgB2 are introduced. Other topics are: singularity in the case of transport current in a parallel magnetic field such as deviation from the Josephson relation, reversible flux motion inside pinning potentials which causes deviation from the critical state model prediction, the concept of the minimization of energy dissipation in the flux pinning phenomena which gives the basis for the critical state model, etc. Significant reduction in the AC loss in AC wires with very fine filaments originates from the reversible flux motion which is dominant in the two-dimensional pinning. The concept of minimum energy dissipation explains also the behavior of flux bundle size which determines the irreversibility line under the flux creep. The new edition has been thoroughly updated, with new sections on the progress in enhancing the critical current density in high temperature superconductors by introduction of artificial pinning centers, the effect of packing density on the critical current density and irreversibility field in MgB2 and derivation of the force-balance equation from the minimization of the free energy including the pinning energy.
Mgb2 Superconducting Wires Basics And Applications
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Author : Rene Flukiger
language : en
Publisher: World Scientific
Release Date : 2016-08-10
Mgb2 Superconducting Wires Basics And Applications written by Rene Flukiger and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-10 with Technology & Engineering categories.
The compendium gives a complete overview of the properties of MgB2 (Magnesium Diboride), a superconducting compound with a transition temperature of Tc = 39K, from the fundamental properties to the fabrication of multifilamentary wires and to the presentation of various applications. Written by eminent researchers in the field, this indispensable volume not only discusses superconducting properties of MgB2 compounds, but also describes known preparation methods of thin films and of bulk samples obtained under high pressure methods.A unique selling point of the book is the detailed coverage of various applications based on MgB2, starting with MRI magnets and high current cables, cooled by Helium (He) vapor. High current cables cooled by liquid hydrogen are also highlighted as an interesting alternative due to the shrinking He reserves on earth. Other pertinent subjects comprise permanent magnets, ultrafine wires for space applications and wind generator projects.
Flux Pinning In Superconductors
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Author : Teruo Matsushita
language : en
Publisher: Springer Nature
Release Date : 2022-08-31
Flux Pinning In Superconductors written by Teruo Matsushita and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-08-31 with Technology & Engineering categories.
This book covers the flux pinning mechanisms and properties and the electromagnetic phenomena caused by the flux pinning common for metallic, high-Tc and MgB2 superconductors. The condensation energy interaction known for normal precipitates or grain boundaries and the kinetic energy interaction proposed for artificial Nb pins in Nb-Ti, etc., are introduced for the pinning mechanism. Summation theories to derive the critical current density are discussed in detail. Irreversible magnetization and AC loss caused by the flux pinning are also discussed. The loss originally stems from the ohmic dissipation of normal electrons in the normal core driven by the electric field induced by the flux motion. The influence of the flux pinning on the vortex phase diagram in high Tc superconductors is discussed, and the dependencies of the irreversibility field are also described on other quantities such as anisotropy of superconductor, specimen size and electric field strength. Recent developments of critical current properties in various high-Tc superconductors and MgB2 are introduced. The 3rd edition has been thoroughly updated, with a new chapter on critical state model. The mechanism of irreversible properties is discussed in detail. The author provides calculations of pinning loss by the equation of motion of flux lines in the pinning potential and hysteresis loss. The readers will learn why the resultant loss is of hysteresis type in spite of such mechanism. This book aims for graduate students and researchers studying superconductivity as well as engineers working in electric utility industry.
Vortices And Nanostructured Superconductors
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Author : Adrian Crisan
language : en
Publisher: Springer
Release Date : 2017-07-19
Vortices And Nanostructured Superconductors written by Adrian Crisan and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-19 with Technology & Engineering categories.
This book provides expert coverage of modern and novel aspects of the study of vortex matter, dynamics, and pinning in nanostructured and multi-component superconductors. Vortex matter in superconducting materials is a field of enormous beauty and intellectual challenge, which began with the theoretical prediction of vortices by A. Abrikosov (Nobel Laureate). Vortices, vortex dynamics, and pinning are key features in many of today’s human endeavors: from the huge superconducting accelerating magnets and detectors at the Large Hadron Collider at CERN, which opened new windows of knowledge on the universe, to the tiny superconducting transceivers using Rapid Single Flux Quanta, which have opened a revolutionary means of communication. In recent years, two new features have added to the intrinsic beauty and complexity of the subject: nanostructured/nanoengineered superconductors, and the discovery of a range of new materials showing multi-component (multi-gap) superconductivity. In this book, leading researchers survey the most exciting and important recent developments in the field. Topics covered include: the use of scanning Hall probe microscopy to visualize interactions of a single vortex with pinning centers; Magneto-Optical Imaging for investigating what vortex avalanches are, why they appear, and how they can be controlled; and the vortex interactions responsible for the second magnetization peak. Other chapters discuss nanoengineered pinning centers of vortices for improved current-carrying capabilities, current anisotropy in cryomagnetic devices in relation to the pinning landscape, and the new physics associated with the discovery of new superconducting materials with multi-component superconductivity. The book offers something for almost everybody interested in the field: from experimental techniques to visualize vortices and study their dynamics, to a state-of-the-art theoretical microscopic approach to multicomponent superconductivity.
Comprehensive Energy Systems
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Author : Ibrahim Dincer
language : en
Publisher: Elsevier
Release Date : 2018-02-07
Comprehensive Energy Systems written by Ibrahim Dincer and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-07 with Science categories.
Comprehensive Energy Systems, Seven Volume Set provides a unified source of information covering the entire spectrum of energy, one of the most significant issues humanity has to face. This comprehensive book describes traditional and novel energy systems, from single generation to multi-generation, also covering theory and applications. In addition, it also presents high-level coverage on energy policies, strategies, environmental impacts and sustainable development. No other published work covers such breadth of topics in similar depth. High-level sections include Energy Fundamentals, Energy Materials, Energy Production, Energy Conversion, and Energy Management. Offers the most comprehensive resource available on the topic of energy systems Presents an authoritative resource authored and edited by leading experts in the field Consolidates information currently scattered in publications from different research fields (engineering as well as physics, chemistry, environmental sciences and economics), thus ensuring a common standard and language
Enhanced Flux Pinning To High Fields In Ybco And Ybco Ag Superconductors
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Author : Namburi Devendra Kumar
language : de
Publisher: LAP Lambert Academic Publishing
Release Date : 2012-08
Enhanced Flux Pinning To High Fields In Ybco And Ybco Ag Superconductors written by Namburi Devendra Kumar and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08 with categories.
Bulk REBa2Cu3O7-δ (REBCO, RE stands for Rare-Earth) superconductors find a large number of applications as levitation platforms, vibration dampers, fault current limiters, magnetic shields, microwave cavities and many more. It is necessary for such applications that the material is processed into required shapes and possesses microstructures that support high current densities (Jc) up to large applied magnetic fields. Details of the development of a novel process called Preform Optimized Infiltration Growth Process (POIGP) are discussed. POIGP enables fabrication of uniformly high Jc REBCO and REBCO/Ag superconducting composites with good homogeneity in the distribution of RE2BaCuO5 inclusions in the REBa2Cu3O7-δ matrix. The work described in this book points to the nature and scale of defects required for improving the field dependence of Jc in REBCO products. The defect structure observed in the matrix of YBa2Cu3O7-δ includes widespread, nano-sized, twin variants. Crossing nano-twins are observed when Y2BaCuO5 inclusions are in close proximity in the YBa2Cu3O7-δ. The observed defect spacing and densities account for the uniformly high current densities observed to high fields.
Mgb2 Superconducting Wires
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Author : René Flükiger
language : en
Publisher:
Release Date : 2016
Mgb2 Superconducting Wires written by René Flükiger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Electric wire categories.
Handbook Of Superconductivity
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Author : David A. Cardwell
language : en
Publisher: CRC Press
Release Date : 2022-07-05
Handbook Of Superconductivity written by David A. Cardwell and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-07-05 with Science categories.
This is the second 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 where a single, coherent quantum state may extend over a distance of metres, or even kilometres, depending on the size of a coil or length of superconducting wire. Viable applications of superconductors rely fundamentally on an understanding of this intriguing phenomena and the availability of a range of materials with bespoke properties to meet practical needs. While the first volume covers the fundamentals of superconductivity and the various classes of superconducting materials, Volume 2 covers processing of the desired superconducting materials into desired forms: bulks, films, wires and junction-based devices. The volume closes with articles on the refrigeration methods needed to put the materials into the superconducting state. Key Features: Covers the depth and breadth of the field Includes contributions from leading academics and industry professionals across the world Provides hands-on guidance to the manufacturing and processing technologies 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.
Applications Of High Tc Superconductivity
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Author : Adir Luiz
language : en
Publisher: BoD – Books on Demand
Release Date : 2011-06-27
Applications Of High Tc Superconductivity written by Adir Luiz and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06-27 with Science categories.
This book is a collection of the chapters intended to study only practical applications of HTS materials. You will find here a great number of research on actual applications of HTS as well as possible future applications of HTS. Depending on the strength of the applied magnetic field, applications of HTS may be divided in two groups: large scale applications (large magnetic fields) and small scale applications (small magnetic fields). 12 chapters in the book are fascinating studies about large scale applications as well as small scale applications of HTS. Some chapters are presenting interesting research on the synthesis of special materials that may be useful in practical applications of HTS. There are also research about properties of high-Tc superconductors and experimental research about HTS materials with potential applications. The future of practical applications of HTS materials is very exciting. I hope that this book will be useful in the research of new radical solutions for practical applications of HTS materials and that it will encourage further experimental research of HTS materials with potential technological applications.