Glass precursor approach to high-temperature superconductors
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National Aeronautics and Space Administration , [Washington, DC]
|Other titles||Glass precursor approach to high temperature superconductors.|
|Statement||Narottam P. Bansal.|
|Series||NASA technical memorandum -- 105590.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
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[Narottam P Bansal; United States. National Aeronautics and Space Administration.]. The available studies on the synthesis of high T sub c superconductors (HTS) via the glass precursor approach were reviewed.
Melts of the Bi-Sr-Ca-Cu-O system as well as those doped with oxides of some other elements (Pb, Al, V, Te, Nb, etc.) could be quenched into glasses which, on further heat treatments under appropriate conditions, crystallized into the superconducting phase(s).Author: Narottam P.
Bansal. Abstract. The available studies on the synthesis of high T sub c superconductors (HTS) via the glass precursor approach were reviewed. Melts of the Bi-Sr-Ca-Cu-O system as well as those doped with oxides of some other elements (Pb, Al, V, Te, Nb, etc.) could be quenched into glasses which, on further heat treatments under appropriate conditions, crystallized into the superconducting phase(s).Author: Narottam P.
Bansal. The essential properties of high-temperature cuprate superconductors are reviewed on the background of their theoretical interpretation. The experimental results for structural, magnetic, thermal, electric, optical and lattice properties of various cuprate superconductors are presented with respect to relevant theoretical : Springer-Verlag Berlin Heidelberg.
Phase Transition Approach to High Temperature Superconductivity. Universal Properties of Cuprate Superconductors. https: The discovery of superconductivity at 30 K by Bednorz and Müller in ignited an explosion of interest in high temperature superconductivity.
The initial development rapidly evolved into an intensive worldwide. High temperature superconductors (HTS) have been used for building many devices for electric grids worldwide and for large ship propulsion motors for the U.S. Navy.
And yet, there has been no single source discussing theory and design issues relating to power applications of HTS—until now. A key factor for enabling high temperature superconductor (HTS) applications is the critical current density (J c).The basic physics determining J c is presented, along with basic concepts of the materials science of engineered flux-pinning defects, which provide tools to increase J c in a superconductor.
A history of the development of HTS materials concludes with comparison of. A key feature of high-temperature superconductors is a strong amplitude of thermal fluctuations.
The strength of thermal fluctuations in a superconductor can be conveniently quantified by the relative temperature range at zero magnetic field where fluctuations become strong.
This parameter is known as the Ginzburg number (Larkin and Varlamov ). High Temperature Superconductors (HTS) Our YBCO 2G HTS wire products enhance the reliability and efficiency of electrical power grids and large energy demanding applications. Conductors made by Bruker HTS are used to build a new generation of compact high power devices such as motors, generators, cables and transformers as well as high field.
"This book appears at a time when the field has reached maturity. It differs clearly from textbooks on superconductivity, as it emphasizes the interdisciplinary aspects of the fundamentals and the applications, although it does not treat the phenomenon of superconductivity by reference to quantum mechanics or the Ginzburg-Landau theory.
Recommended Citation: U.S. Congress, Office of Technology Assessment, High-Temperature Superconductivity in Perspective, OTA-E(Washington, DC: U.S.
Government Printing Office, April ). For sale by the Superintendent of Documents U.S. Government Printing Office, Washington, DC. 3 5 High temperature superconductors YBa 2Cu 3O7-δ Bi 2Sr 2CaCu 2O8 Bi 2Sr 2Ca 2Cu 3O10 TlBa 2Ca 2Cu 3O10 HgBa 2Ca 2Cu 3O10 Y Bi Bi Tl Hg 92 84 compound TC (K) commercial potential Ba-La-Cu-O Ba-La-Cu-O compound.
Glass precursor approach to high-temperature superconductors The available studies on the synthesis of high T sub c superconductors (HTS) via the glass precursor approach were reviewed.
Melts of the Bi-Sr-Ca-Cu-O system as well as those doped with oxides of some other elements (Pb, Al, V, Te, Nb, etc.) could be quenched into glasses which, on further heat treatments under appropriate.
This book provides readers with a comprehensive overview of the science of superconducting materials. It serves as a fundamental information source on the actual techniques and methodologies involved in superconducting materials growth, characterization and processing.
This book includes coverage of several categories of medium and high-temperature superconducting materials: cuprate oxides. High Temperature Superconductors Paperback – January 1, See all formats and editions Hide other formats and editions. Price New from Used from Paperback "Please retry" $ — $ Paperback, January 1, $ — $ Paperback $ 1 Used from $ Enter your mobile number or email address below and we'll send you a Manufacturer: Materials Research Society.
The various approaches to understanding the pseudogap phase of the high temperature superconductors seem to be divided roughly into two schools: those in which the pseudogap is associated with a competing energy gap (or hidden order parameter) and those in which the pseudogap derives from the superconductivity latter “precursor superconductivity” school has multiple.
Bi2-xHgxSr2-yBayCaCu2O8 High Temperature Superconductor (HTSC) has been prepared as a pellet by solid state reaction with a certain substitution percentages (0,) of Hg and Ba.
Vortex glass to vortex fluid transition The (H, T) phase diagram of extreme type II superconductors emerging from Monte Carlo simulations Quantum Phase Transitions Scaling theory of quantum critical phenomena Quantum critical phenomena: conventional superconductors Quantum critical phenomena: cuprate.
Since the discovery of superconductors by Heike Kamerlingh Onnes in1 1. Onnes, “ The resistance of pure mercury at helium temperatures,” Lab. Univ. Leiden. 12, ().
Description Glass precursor approach to high-temperature superconductors FB2
they have attracted scientists for more than a century. So far, the highest record of superconducting critical temperature T C at atmospheric pressure has been close to K, found in.
Concepts in High Temperature Superconductivity E. Carlson, V. Emery, S. Kivelson, D. Orgad It is the purpose of this paper to explore the theory of high temperature superconductivity. Much of the motivation for this comes from the study of the cuprate high temperature superconductors.
However, our primary focus is on the. Universal Scaling Analysis on Vortex-Glass State of High-Temperature Superconductor HgBa2Ca2Cu3O8+delta Article in IEEE Transactions on Magnetics 47(10).
About this book 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.
This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications.
The papers included in the collection have been made free to read. Purdue University: Department of Physics and Astronomy.
Details Glass precursor approach to high-temperature superconductors PDF
Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic flux fields are expelled from the material. Any material exhibiting these properties is a an ordinary metallic conductor, whose resistance decreases gradually as its temperature is lowered even down to near absolute zero, a superconductor has a.
An unprecedented molecular 2Fe–2As precursor complex was synthesized and transformed under soft reaction conditions to produce an active and long-term stable nanocrystalline FeAs material for electrocatalytic water oxidation in alkaline media.
The 2Fe2As-centred β-diketiminato complex, having an. The authors have developed a new method, which they term the 'powder melting process' (PMP) for the preparation of high J c YBCO superconductors.
The YBCO conductors have been fabricated via a continuous melting and unidirectional solidification process using precursor powders of Y 2 BaCuO 5 (() phase) and BaCuO as starting materials.
The transport J c values of the samples. High temperature superconductors have received a great deal of attention in recent years, due to their potential in device and power applications. This book summarises the materials science and physics of all the most important high temperature superconductors as well as discussing material growth, properties and applications.
In this article we review numerical studies of the quantum Heisenberg antiferromagnet on a square lattice, which is a model of the magnetic properties of the undoped “precursor insulators” of the high temperature superconductors.
Quantum magnets in 2D: nonlinear sigma model, CP1 and 'all that'; The spin-fermion system: a quantum field theory approach; The spin glass; Quantum field theory approach to superfluidity; Quantum field theory approach to superconductivity; The cuprate high-temperature superconductors; The pnictides: iron based.The Physics of High Temperature Superconductors G.
Steele May 9, Abstract We review the physics of high temperature superconductors. We start by looking at the experimental facts and giving a general overview of the cuprate superconductors. Using this as motivation, we follow Anderson’s ideas for constructing a coherent theoretical.
A new approach for studying electric charge arrangements in a superconductor. High-temperature superconductors are a class of materials that .
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