Enhanced Flux Pinning To High Fields In Ybco And Ybco Ag Superconductors

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Enhanced Flux Pinning to High Fields in Ybco and Ybco/Ag Superconductors

Author : Namburi Devendra Kumar
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659146541
Total Pages : 192 pages
Book Rating : 4.1/5 (465 download)

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Book Synopsis Enhanced Flux Pinning to High Fields in Ybco and Ybco/Ag Superconductors by : Namburi Devendra Kumar

Download or read book Enhanced Flux Pinning to High Fields in Ybco and Ybco/Ag Superconductors written by Namburi Devendra Kumar and published by LAP Lambert Academic Publishing. This book was released on 2012-08 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Flux Pinning in Superconductors

Author : Teruo Matsushita
Publisher : Springer Nature
ISBN 13 : 3030946398
Total Pages : 506 pages
Book Rating : 4.0/5 (39 download)

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Book Synopsis Flux Pinning in Superconductors by : Teruo Matsushita

Download or read book Flux Pinning in Superconductors written by Teruo Matsushita and published by Springer Nature. This book was released on 2022-08-31 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Addition of Nanoparticle Dispersions to Enhance Flux Pinning of the YBa2Cu3O7-x Superconductor

Author :
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (15 download)

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Book Synopsis Addition of Nanoparticle Dispersions to Enhance Flux Pinning of the YBa2Cu3O7-x Superconductor by :

Download or read book Addition of Nanoparticle Dispersions to Enhance Flux Pinning of the YBa2Cu3O7-x Superconductor written by and published by . This book was released on 2004 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: After the discovery of type-II HTS, focus is to develop these materials for power applications. One of the problems has been that magnetic flux is not completely expelled but rather contained within magnetic fluxons, whose motion stops larger supercurrents. It's known that the critical current of these materials can be enhanced by incorporating a high density of extended defects to act as pinning centres for the fluxons. YBa2Cu3O7 (YBCO or 123) is the most promising material for such applications at higher temperatures. Pinning is optimized when the size of the defects approaches the superconducting coherence length (̃2-4nm for YBCO at temperatures ≤ 77 K) and when the areal number density of defects is of the order of (H/2) x 1011 cm-2, where H is the applied magnetic field in tesla. Such a high density has been hard to get by material-processing methods that keep a nanosize defect, except through irradiation. Here we report a method for achieving a dispersion of ̃8-nm-sized nanoparticles in YBCO with a high number density, which increases critical current (at 77 K) by a factor of two to three for high magnetic fields.

YBCO Superconductor Research Progress

Author : Li-Chun Liáng
Publisher : Nova Publishers
ISBN 13 : 9781604560831
Total Pages : 248 pages
Book Rating : 4.5/5 (68 download)

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Book Synopsis YBCO Superconductor Research Progress by : Li-Chun Liáng

Download or read book YBCO Superconductor Research Progress written by Li-Chun Liáng and published by Nova Publishers. This book was released on 2008 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconductivity is the ability of certain materials to conduct electrical current with no resistance and extremely low losses. High temperature superconductors, such as La2-xSrxCuOx (Tc=40K) and YBa2Cu3O7-x (Tc=90K), were discovered in 1987 and have been actively studied since. In spite of an intense world-wide research, a complete understanding of the copper oxide (cuprate) materials is still lacking. Many fundamental questions are unanswered, particularly the mechanism by which high-Tc superconductivity occurs. More broadly, the cuprates are in a class of solids with strong electron-electron interactions. An understanding of such 'strongly correlated' solids is perhaps the major unsolved problem of condensed matter physics with over ten thousand researchers working on this topic. High-Tc superconductors also have significant potential for applications in technologies ranging from electric power generation and transmission to digital electronics. This ability to carry large amounts of current can be applied to electric power devices such as motors and generators, and to electricity transmission in power lines. For example, superconductors can carry as much as 100 times the amount of electricity of ordinary copper or aluminium wires of the same size. This Publication presents new research on yttrium barium copper oxide superconductors, often abbreviated YBCO, which is a chemical compound with the formula YBa2Cu3O7. This material, a famous 'high-temperature superconductor', achieved prominence because it was the first material to superconduct above the boiling point of nitrogen. All materials developed before YBCO became superconducting only at temperatures near the boiling points of liquid helium or liquid hydrogen (Tb = 20.1 K). The significance of the discovery of YBCO is the breakthrough in the refrigerant used to cool the material to below the critical temperature.

Flux Pinning in YBCO Superconductor

Author : David Bostonian Jan
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Flux Pinning in YBCO Superconductor by : David Bostonian Jan

Download or read book Flux Pinning in YBCO Superconductor written by David Bostonian Jan and published by . This book was released on 2002 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Study of Improved Critical Currents and Mechanical Properties in YBaCuO Superconductor W/Ag Or 211

Author : Siu-Wai Chan
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Study of Improved Critical Currents and Mechanical Properties in YBaCuO Superconductor W/Ag Or 211 by : Siu-Wai Chan

Download or read book Study of Improved Critical Currents and Mechanical Properties in YBaCuO Superconductor W/Ag Or 211 written by Siu-Wai Chan and published by . This book was released on 1993 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microstructure of the melted textured bulk YBCO materials with different vol% 211 were investigated. The homogeneity of 211 distribution was greatly improved by using a solution precipitated 211 powder in preparation. Crack spacings, were found to decrease with increasing vol% of the 211 particles. The 211 particles were found to be effective in holding crack propagation. Hardness and toughness measurements will be performed. The measured critical current density in high fields in epitaxial thin films of YBCO were compared with both the flux pinning and pair breaking models. This work was published Nov, 92. High quality YBCO films were grown on spinel and garnet. These substrate materials can interface between the superconducting and semiconducting materials for novel devices. This paper was submitted to APL ... Superconductors, Critical currents, Dispersions, Thin films, Flux-pinning.

New Research on YBCO Superconductors

Author : David M. Friedman
Publisher : Nova Publishers
ISBN 13 : 9781604560848
Total Pages : 306 pages
Book Rating : 4.5/5 (68 download)

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Book Synopsis New Research on YBCO Superconductors by : David M. Friedman

Download or read book New Research on YBCO Superconductors written by David M. Friedman and published by Nova Publishers. This book was released on 2008 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconductivity is the ability of certain materials to conduct electrical current with no resistance and extremely low losses. High temperature superconductors, such as La2-xSrxCuOx (Tc=40K) and YBa2Cu3O7-x (Tc=90K), were discovered in 1987 and have been actively studied since. In spite of an intense world-wide research, a complete understanding of the copper oxide (cuprate) materials is still lacking. Many fundamental questions are unanswered, particularly the mechanism by which high-Tc superconductivity occurs. More broadly, the cuprates are in a class of solids with strong electron-electron interactions. An understanding of such 'strongly correlated' solids is perhaps the major unsolved problem of condensed matter physics with over ten thousand researchers working on this topic. High-Tc superconductors also have significant potential for applications in technologies ranging from electric power generation and transmission to digital electronics. This ability to carry large amounts of current can be applied to electric power devices such as motors and generators, and to electricity transmission in power lines. For example, superconductors can carry as much as 100 times the amount of electricity of ordinary copper or aluminium wires of the same size. This Publication presents new research on yttrium barium copper oxide superconductors, often abbreviated YBCO, which is a chemical compound with the formula YBa2Cu3O7. This material, a famous 'high-temperature superconductor', achieved prominence because it was the first material to superconduct above the boiling point of nitrogen. All materials developed before YBCO became superconducting only at temperatures near the boiling points of liquid helium or liquid hydrogen (Tb = 20.1 K). The significance of the discovery of YBCO is the breakthrough in the refrigerant used to cool the material to below the critical temperature.

Interaction of Superconductivity and Ferromagnetism in YBCO-LCMO Heterostructures

Author : Soltan Soltan
Publisher : Cuvillier Verlag
ISBN 13 : 3865373496
Total Pages : 166 pages
Book Rating : 4.8/5 (653 download)

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Book Synopsis Interaction of Superconductivity and Ferromagnetism in YBCO-LCMO Heterostructures by : Soltan Soltan

Download or read book Interaction of Superconductivity and Ferromagnetism in YBCO-LCMO Heterostructures written by Soltan Soltan and published by Cuvillier Verlag. This book was released on 2005 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Enhancement of Flux Pinning in YBCO Superconductors Using Fast Neutron Irradiation

Author : May-Ling M. Li
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (73 download)

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Book Synopsis The Enhancement of Flux Pinning in YBCO Superconductors Using Fast Neutron Irradiation by : May-Ling M. Li

Download or read book The Enhancement of Flux Pinning in YBCO Superconductors Using Fast Neutron Irradiation written by May-Ling M. Li and published by . This book was released on 2011 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Flux Pinning in Yttrium Barium Copper Oxide Coated Conductors

Author : Zhijun Chen
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (891 download)

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Book Synopsis Flux Pinning in Yttrium Barium Copper Oxide Coated Conductors by : Zhijun Chen

Download or read book Flux Pinning in Yttrium Barium Copper Oxide Coated Conductors written by Zhijun Chen and published by . This book was released on 2008 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Flux Pinning and AC Loss Studies on YBCO Coated Conducters

Author : Mariappan Parans Paranthaman
Publisher :
ISBN 13 : 9781600216923
Total Pages : 0 pages
Book Rating : 4.2/5 (169 download)

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Book Synopsis Flux Pinning and AC Loss Studies on YBCO Coated Conducters by : Mariappan Parans Paranthaman

Download or read book Flux Pinning and AC Loss Studies on YBCO Coated Conducters written by Mariappan Parans Paranthaman and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major advances have been made in the last 18 years in high-temperature superconductor (HTS) research and development, resulting in increased use of HTS materials in commercial and pre-commercial electric-power applications. This new and important book addresses the issues related to flux pinning, AC losses and thick YBCO film growth. Written by top most scientists in the world, it presents the current status and issues related to YBCO coated conductors and the need for further fundamental materials science work in YBCO coated conductor. This will be a useful handbook for years to come.

Flux Pinning in High Temperature Superconductors

Author : Anant Narlikar
Publisher :
ISBN 13 :
Total Pages : 282 pages
Book Rating : 4.5/5 (619 download)

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Book Synopsis Flux Pinning in High Temperature Superconductors by : Anant Narlikar

Download or read book Flux Pinning in High Temperature Superconductors written by Anant Narlikar and published by . This book was released on 2000 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Main headings: Flux Depinning and Current vs. Voltage Characteristics Near the Glass-Liquid Transition; Equilibrium Properties of the Mixed Phase of High-Tc Superconductors in the Presence of Pinning; Microstructure and Flux Pinning in Melt Processed (Nd,Eu,Gd)-Ba-Cu-O Superconductor; Influence of Irradiation-Induced Defects and Chemical Substitutions on the Flux Pinning in Hg-Based Single Crystals and Films; Magnetisation Discontinuities at Melting and Freezing Transitions in YBa2Cu3O7-8; Current-Induced Unbinding of Thermally Created Vortex-Antivortex Pairs in Zero Magnetic Field; Flux Creep-Flux Flow Crossover in the Presence of Disorder in High Temperature Superconductors.

High-Tc Superconducting Technology

Author : Muralidhar Miryala
Publisher : CRC Press
ISBN 13 : 1000375064
Total Pages : 608 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis High-Tc Superconducting Technology by : Muralidhar Miryala

Download or read book High-Tc Superconducting Technology written by Muralidhar Miryala and published by CRC Press. This book was released on 2021-11-24 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mitigating climate change, clean environment, global peace, financial growth, and future development of the world require new materials that improve the quality of life. Superconductivity, in general, allows perfect current transmission without losses. This makes it a valuable resource for sustainability in several aspects. High-temperature superconducting (HTSC) materials will be crucial for sustainable everyday applications and more attractive for the United Nations’ SDGs. Superconducting magnets can be used as high-field magnets in magnetic resonance imaging, nuclear magnetic resonance, water purification, magnetic drug delivery, etc. Hunger can be partly avoided if there is sustainability in agriculture. In the future, DC electric energy from solar plants in Africa could be transported worldwide, especially to cold countries, using superconducting cables. Superconducting technology is an efficient way to create sustainability as well as reduce greenhouse gases. This book presents the latest global achievements in the processing and applications of high-Tc superconductors and discusses the usefulness of the SDGs. It summarizes the related advances in materials science and developments with respect to the SDGs. The book also covers large-scale applications of HTSC materials, which will be connected to the SDGs, addressed by several eminent scientists, including Prof. M. Murakami, president, Shibaura Institute of Technology, Japan; Prof. D. Cardwell, pro-vice chancellor, University of Cambridge, UK; and Prof. N. Long, director, Victoria University of Wellington, New Zealand.

High Tc Superconductors

Author : J. Dumas
Publisher : Elsevier
ISBN 13 : 0444596542
Total Pages : 763 pages
Book Rating : 4.4/5 (445 download)

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Book Synopsis High Tc Superconductors by : J. Dumas

Download or read book High Tc Superconductors written by J. Dumas and published by Elsevier. This book was released on 1993-05-05 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wide range of progress in materials development [single crystals, ceramics, thin films, wire and tapes] is reported in the 169 papers in this volume. The main focus of the papers is in attaining a better understanding of the relationship between microstructure and electrical properties. Invited papers cover topics such as the effects of substitution and doping; multilayers; nanostructure characterisation; electric field effects in High Tc Superconductors [HTS]; surface stability; critical currents; flux pinning and magnetooptic imaging of flux patterns; effects of irradiation induced defects; properties and preparation of materials; microwave properties and electronic devices. A clearly broadened basis for understanding processes and mechanisms in [HTS] is portrayed. Appreciable progress has been achieved in the reproducible manufacturing of high quality materials supported by very efficient methods in microstructural analysis. This essential improvement is reflected in the increased number of practical devices encouraging the use of HTS in applications for electronics and power engineering, all of which are reviewed in depth in this work.

Critical Current, Flux Pinning and Optical Studies of High Temperature Superconductors

Author : Anant Narlikar
Publisher : Nova Science Pub Incorporated
ISBN 13 : 9781560724209
Total Pages : 294 pages
Book Rating : 4.7/5 (242 download)

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Book Synopsis Critical Current, Flux Pinning and Optical Studies of High Temperature Superconductors by : Anant Narlikar

Download or read book Critical Current, Flux Pinning and Optical Studies of High Temperature Superconductors written by Anant Narlikar and published by Nova Science Pub Incorporated. This book was released on 1997 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

High Temperature Superconducting Magnetic Levitation

Author : Jia-Su Wang
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110538431
Total Pages : 402 pages
Book Rating : 4.1/5 (15 download)

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Book Synopsis High Temperature Superconducting Magnetic Levitation by : Jia-Su Wang

Download or read book High Temperature Superconducting Magnetic Levitation written by Jia-Su Wang and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-12-18 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors begin this book with a systematic overview of superconductivity, superconducting materials, magnetic levitation, and superconducting magnetic levitation - the prerequisites to understand the latter part of the book - that forms a solid foundation for further study in High Temperature Superconducting Magnetic Levitation (HTS Maglev). This book presents our research progress on HTS Maglev at Applied Superconductivity Laboratory (ASCLab) of Southwest Jiaotong University (SWJTU), China, with an emphasis on the findings that led to the world‘s first manned HTS Maglev test vehicle "Century". The book provides a detailed description on our previous work at ASCLab including the designing of the HTS Maglev test and measurement method as well as the apparatus, building "Century", developing the HTS Maglev numerical simulation system, and making new progress on HTS Maglev. The final parts of this book discuss research and prototyping efforts at ASCLab in several adjacent fi elds including HTS Maglev bearing, Flywheel Energy Storage System (FESS) and HTS maglev launch technology. We hope this book becomes a valuable source for researchers and engineers working in the fascinating field of HTS Maglev science and engineering. Contents Fundamentals of superconductivity Superconducting materials Magnetic levitation Superconducting magnetic levitation HTS Maglev experimental methods and set-up First manned HTS Maglev vehicle in the world Numerical simulations of HTS Maglev New progress of HTS Maglev vehicle HTS Maglev bearing and flywheel energy storage system HTS Maglev launch technology

High-Temperature Superconductors and Novel Inorganic Materials

Author : Gustaaf Tendeloo
Publisher : Springer Science & Business Media
ISBN 13 : 9780792353454
Total Pages : 328 pages
Book Rating : 4.3/5 (534 download)

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Book Synopsis High-Temperature Superconductors and Novel Inorganic Materials by : Gustaaf Tendeloo

Download or read book High-Temperature Superconductors and Novel Inorganic Materials written by Gustaaf Tendeloo and published by Springer Science & Business Media. This book was released on 1999 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research into high-Tc materials demands the co-operation of physicists, chemists and materials scientists to discover the best solutions to the most important challenges presented by the field. In the fifth annual Workshop on High Temperature Superconductors and Novel Inorganic Materials Engineering, the topic is extended beyond high-Tc superconductivity to include other advanced oxide materials, mainly colossal magnetoresistance materials, which are closely related to the ceramic superconductors. This book covers the synthesis, characterisation (both structural and physical) and engineering of this class of materials.