Flux Pinning In Yttrium Barium Copper Oxide Coated Conductors

DOWNLOAD

Download Flux Pinning In Yttrium Barium Copper Oxide Coated Conductors PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Flux Pinning In Yttrium Barium Copper Oxide Coated Conductors book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page

Flux Pinning In Yttrium Barium Copper Oxide Coated Conductors

DOWNLOAD
Author : Zhijun Chen
language : en
Publisher:
Release Date : 2008

Flux Pinning In Yttrium Barium Copper Oxide Coated Conductors written by Zhijun Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

The Critical Current Density Of Yttrium Barium Copper Oxide Coated Conductors

DOWNLOAD
Author : Sang Il Kim
language : en
Publisher:
Release Date : 2007

The Critical Current Density Of Yttrium Barium Copper Oxide Coated Conductors written by Sang Il Kim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

Flux Pinning And Ac Loss Studies On Ybco Coated Conducters

DOWNLOAD
Author : Mariappan Parans Paranthaman
language : en
Publisher:
Release Date : 2007

Flux Pinning And Ac Loss Studies On Ybco Coated Conducters written by Mariappan Parans Paranthaman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Electric currents, Alternating categories.

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 By Mn Co Doping And Electro Mechanical Behavior Of Ybco Coated Conductors

DOWNLOAD
Author : Robert Joseph Mensah
language : en
Publisher:
Release Date : 2008

Flux Pinning By Mn Co Doping And Electro Mechanical Behavior Of Ybco Coated Conductors written by Robert Joseph Mensah and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Flux pinning categories.

Flux Pinning In Ybco Superconductor

DOWNLOAD
Author : David Bostonian Jan
language : en
Publisher:
Release Date : 2002

Flux Pinning In Ybco Superconductor written by David Bostonian Jan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Ferromagnetic materials categories.

Magnetic Flux Noise In The High Temperature Superconductor Yttrium Barium Copper Oxide

DOWNLOAD
Author : Stephen Anthony Lawrence Foulds
language : en
Publisher:
Release Date : 1994

Magnetic Flux Noise In The High Temperature Superconductor Yttrium Barium Copper Oxide written by Stephen Anthony Lawrence Foulds and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.

Flux Pinning Study Of Reba2cu3o7 Delta Coated Conductors For High Field Magnet Applications

DOWNLOAD
Author : Aixia Xu
language : en
Publisher:
Release Date : 2012

Flux Pinning Study Of Reba2cu3o7 Delta Coated Conductors For High Field Magnet Applications written by Aixia Xu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Materials science categories.

ABSTRACT: REBa2Cu3O7-delta (REBCO, RE = rare earth) coated conductor (CC) holds great promise for high field magnet applications owing to its strong irreversibility field (Hirr), low electromagnetic anisotropy (gamma2), and high critical current density (Jc). The work of this thesis is tightly related to the development of the funded 32 T, all-superconducting magnet project at the ASC/NHMFL. My concern is thus for understanding the optimizing of the working parameters of REBCO CC at low temperatures T, and very high magnetic fields H, focusing on how to enhance Ic and to reduce its angular dependence. Increasing the active cross:section is a direct and economical strategy to enhance the current:carrying capability for REBCO coated conductors. Unfortunately, the high Jc in thin REBCO layers is seldom sustained in thick layers because of difficulties of thick film growth control. In the presence of strong 3D (pin separation far less than film thickness) pins, a high and thickness-independent (Jc) should result. One of major tasks of this thesis is to explore what are the effective strong 3D pins that develop a high and thickness-independent Jc. High and weak thickness-dependent Jc at 77 K is obtained on most recent coated conductors, and BZO nanorods and RE2O3 nanoparticles are identified as strong 3D pins contributing to this respectable Jc performance. At 77 K, we found that the strong pinning of BZO nanorods remains at least up to 9 T, whereas the strong pinning of RE2O3 nanoparticles gradually evolves to weak collective pinning as the irreversibility field is approached. The second principal part of this thesis concentrates on understanding and minimizing the angular dependence of Jc. Our study is based on the following procedure. First, we investigated the angular dependence of Jc (Jc(theta)) in the working condition of the future 32 T all-superconducting magnet, i.e. 4.2 K and high magnetic field up to 31 T. Our work shows that the low temperature Jc(theta) is Ginzburg-Landau-like at low fields and cusp-like towards the ab-plane at high fields. More interestingly, the typically observed Jc c-axis peak of BaZrO3 nanorods (BZO)-containing REBCO at high temperatures disappears at T le 40 K. We observed that Jc(H[is parallel to]c) follows well a power law with exponent alpha approx 0.5 for coated conductors without BZO nanorods and alpha approx 0.7 for coated conductors containing BZO nanorods. More importantly, BZO-containing coated conductors show higher and broader Jc(theta) at least up to 31 T, which is strongly beneficial to high field magnet applications. Finally, we performed Jc(theta) study over a broad temperature domain, 4.2 K to Tc and magnet fields up to 31 T. We found that weak uncorrelated pinning dominates the low temperature Jc. It raises and broadens Jc in the full angular range. We conclude that BZO nanorods induce dense random defects, like oxygen vacancies, atomic disorder etc., which can exert a large pinning effect at low temperatures where thermal fluctuations are small. Near the ab-plane there is clear evidence for strong correlated defects, which we deduce is due to intrinsic pinning by the Cu-O charge reservoir layers The last section discusses the pinning design relevant to coated conductors. Two types of thin films made by pulsed laser deposition (PLD) with well designed defects were studied- one shows Y2O3 precipitates and a high strain which also generates dense point pinning; the second one presents dense stacking faults. The main conclusion is that Jc(theta) can be modulated by tailoring the strain introduced by the mismatch between second phases and REBCO layer. Intrinsic pinning governs Hirr(H[is parallel to]ab), and stacking faults govern Jc(H[is parallel to]ab) and enhance Hirr(H[is parallel to]ab) at T ge 40 K. The thesis contains 8 chapters. The first chapter introduces the background and motivation of this work. Chapter 2 presents thickness dependence of Jc studies. Chapter 3 through chapter 6 present Jc(H, T, theta) characterization and pinning studies on REBCO coated conductors. Chapter 7 presents the pinning mechanisms found in PLD thin films grown with designed pinning structures. The summary and future work is presented in chapter 8.

Applied Superconductivity

DOWNLOAD
Author : Paul Seidel
language : en
Publisher: John Wiley & Sons
Release Date : 2015-01-22

Applied Superconductivity written by Paul Seidel and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-01-22 with Technology & Engineering categories.

This wide-ranging presentation of applied superconductivity, from fundamentals and materials right up to the details of many applications, is an essential reference for physicists and engineers in academic research as well as in industry. Readers looking for a comprehensive overview on basic effects related to superconductivity and superconducting materials will expand their knowledge and understanding of both low and high Tc superconductors with respect to their application. Technology, preparation and characterization are covered for bulk, single crystals, thins fi lms as well as electronic devices, wires and tapes. The main benefit of this work lies in its broad coverage of significant applications in magnets, power engineering, electronics, sensors and quantum metrology. The reader will find information on superconducting magnets for diverse applications like particle physics, fusion research, medicine, and biomagnetism as well as materials processing. SQUIDs and their usage in medicine or geophysics are thoroughly covered, as are superconducting radiation and particle detectors, aspects on superconductor digital electronics, leading readers to quantum computing and new devices.

High Temperature Superconductor Materials Devices And Applications

DOWNLOAD
Author : M. Parans Paranthaman
language : en
Publisher: John Wiley & Sons
Release Date : 2012-04-17

High Temperature Superconductor Materials Devices And Applications written by M. Parans Paranthaman and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-04-17 with Technology & Engineering categories.

This proceedings investigates the relationship between features at the atomic level including oxygen vacancies, stacking faults and site order/disorder, grain boundaries, film-substrate interactions, buffer-superconductor interactions, thermodynamic, transport, and other macroscopic properties. This proceedings will also cover fundamental material properties studies, new growth methods, device and materials integration research, and developments in designing and growing new materials, all involving epitaxial superconducting thin films.

Processing Considerations For Adding Nanometer Scale Oxides To Enhance Flux Pinning In High Temperature Superconductors

DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1997

Processing Considerations For Adding Nanometer Scale Oxides To Enhance Flux Pinning In High Temperature Superconductors written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.

Several nanometer-scale oxide inclusions were added to Bi2Sr2CaCu2O(subscript x) high-temperature superconductors to determine their effectiveness in creating intragranular flux-pinning sites. Powder pellets were fabricated and heat treated by partial-melt processing. Effects of the additives on melting response, superconducting properties, and microstructural development were examined. Al2O3 additions exhibited the most promise for forming stable pinning centers, ZrO2 and SnO2 additions were moderately promising, TiO2, Fe2O3, and ZnO additions were less promising, and Y2O3 additions destroyed superconductivity.