The Critical Current Density Of Yttrium Barium Copper Oxide Coated Conductors

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The Critical Current Density Of Yttrium Barium Copper Oxide Coated Conductors

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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.

Ybco Superconductor Research Progress

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Author : Li-Chun Liáng
language : en
Publisher: Nova Publishers
Release Date : 2008

Ybco Superconductor Research Progress written by Li-Chun Liáng and has been published by Nova Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Science categories.

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.

High Critical Current Density Yttrium Barium Copper Oxide Superconductors

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Author : Samuel D. Lamphier
language : en
Publisher:
Release Date : 2011

High Critical Current Density Yttrium Barium Copper Oxide Superconductors written by Samuel D. Lamphier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

Contact Resistance And Normal Zone Formation In Coated Yttrium Barium Copper Oxide Superconductors

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Author : Robert C. Duckworth
language : en
Publisher:
Release Date : 2001

Contact Resistance And Normal Zone Formation In Coated Yttrium Barium Copper Oxide Superconductors written by Robert C. Duckworth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

New Research On Ybco Superconductors

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Author : David M. Friedman
language : en
Publisher: Nova Publishers
Release Date : 2008

New Research On Ybco Superconductors written by David M. Friedman and has been published by Nova Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Science categories.

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.

Effects Of Different Fabrication Techniques On The Yttrium Barium Copper Oxide High Temperature Superconductor

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Author : Paul A. Rhea
language : en
Publisher:
Release Date : 1988

Effects Of Different Fabrication Techniques On The Yttrium Barium Copper Oxide High Temperature Superconductor written by Paul A. Rhea and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.

This study examines how several different parameters were changed in the yttrium-barium-copper oxide superconductor when the fabrication techniques were altered by using different barium precursors, including barium peroxide and barium carbonate; sintering at different temperatures, including 850, 900, 950 C; and annealing in an above ambient oxygen environment. Twelve different pellets were fabricated, and measurements were taken on them which included density, x-ray diffraction, critical temperature, critical current density, and magnetic susceptibility. The results showed that the barium perioxide derived samples had higher densities, better critical current densities and lower resistivities in the normal state. Keywords: Superconductivity, Yttrium-Barium-Copper oxide, High temperature superconductivity, Thesis. (jes).

Flux Pinning In Yttrium Barium Copper Oxide Coated Conductors

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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.

Current Carrying Capacity Of Yba2cu3o7 Superconducting Ceramics

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Author : W. C. McGinnis
language : en
Publisher:
Release Date : 1988

Current Carrying Capacity Of Yba2cu3o7 Superconducting Ceramics written by W. C. McGinnis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.

Critical current density measurements on the bulk ceramic superconductor Yttrium Barium Copper oxide and related compounds will be presented. The transport method used involves current pulses with at variable duty cycle to eliminate the effect of sample heating at resistive electrical contacts. Failure to take electrode contact resistances into account in transport measurements can lead to misleading low values of the critical current. Keywords: Thin Films; Reprints. (AW).

Apparatus And Method For Measuring Critical Current Properties Of A Coated Conductor

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Author :
language : en
Publisher:
Release Date : 2012

Apparatus And Method For Measuring Critical Current Properties Of A Coated Conductor written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.

The transverse critical-current uniformity in a superconducting tape was determined using a magnetic knife apparatus. A critical current I.sub.c distribution and transverse critical current density J.sub.c distribution in YBCO coated conductors was measured nondestructively with high resolution using a magnetic knife apparatus. The method utilizes the strong depression of J.sub.c in applied magnetic fields. A narrow region of low, including zero, magnetic field in a surrounding higher field is moved transversely across a sample of coated conductor. This reveals the critical current density distribution. A Fourier series inversion process was used to determine the transverse J.sub.c distribution in the sample.

Processing Of High Temperature Superconductors

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Author : Amit Goyal
language : en
Publisher: John Wiley & Sons
Release Date : 2012-04-17

Processing Of High Temperature Superconductors written by Amit Goyal 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.

Included in this volume are papers on biaxial and triaxial crystallographic texturing, epitaxial growth on biaxially textured substrates, melt-processing of YBCO, and basic information about HTS materials concerning phase diagrams, measurement of physical properties, characterization, and effects of various defects including grain boundaries on supercurrent transmission. Proceedings of the symposium held at the 104th Annual Meeting of The American Ceramic Society, April 28-May1, 2002 in Missouri; Ceramic Transactions, Volume 140.